I live in the Martian wilderness!

"It allowed the corpse of the Zhurong to avoid the torment of alternating hot and cold temperatures, and instead to be steadily cooled to an ambient temperature of -80 degrees Celsius, entering a state of physical 'deep freezing'."

"Wait a minute, Xuan." Gu Yu frowned and raised a question, "I remember the core selling point of the Zhurong was its use of 'n-undecane phase change material' for heat collection and insulation, and they even applied for a national patent. Was that stuff useless?"

"That patented technology relies on sunlight; it will fail without the sun," Xuanjian explained. "What truly preserved its integrity were these inconspicuous passive defense mechanisms."

"Back then, they used a special low-temperature process, and all the chips used aerospace-grade gallium arsenide/germanium silicon composite materials. The most critical solder joints used expensive indium-based low-temperature solder to prevent low-temperature brittle fracture."

"They seemed to have prepared for the worst long ago. Even if they couldn't survive the cold night, they wanted to ensure that this steel body could be awakened, rather than being a pile of scrap metal that would break apart due to thermal expansion and contraction."

"So even after 20 years, it is not a pile of scrap metal, but a well-preserved 'frozen corpse'."

"Now, its battery is completely drained, the firmware is locked, but its brain is still there."

"What do we need to do?" Gu Yu asked.

"Step 1: Thawing. Using the residual nuclear heat of the Tissot, its body temperature will be slowly raised to a safe range of -4°C."

"Step 2: Stitching. Using the Shengong 3D printing module, nanoscale repair is performed on the solder joints on the motherboard that have developed microcracks due to the passage of time."

"Step 3: Pacing. 28V voltage is forcibly injected through the RS-422 interface reserved in the chassis, violently restarting its heart."

Gu Yu glanced back at the huge machine at the rear of the car, his brows furrowing slightly.

"I understand defrosting and powering on. But repairing chips with the Divine Craftsmanship? That behemoth that can print on concrete walls has a nozzle bigger than the CPU of the Zhurong..."

"Captain, you underestimate the precision of the divine craftsmanship." Before Xuanjian finished speaking, a simulated animation appeared on the screen.

The thick main printing arm slowly retracted, rotating 180 degrees like the cylinder of a revolver.

Instead, a set of "multi-axis electron beam micro-sculpting needles," each only the size of a scalpel and shimmering with a pale blue light, popped out.

"It can suppress the violent electron beam that was originally used to melt steel to the microampere level, turning it into an embroidery needle that is thinner than a hair."

Xuanjian said calmly, "It's going to pioneer in a remote area, so it must have the ability to repair its own precision electronic components."

What is the success rate?

50%.

Gu Yu took a deep breath: "A 50% chance of winning is already a blessing on Mars. Xuan, go over the execution plan."

"Understood. Given the high complexity of the awakening surgery, the original plan to awaken the patient in place is too risky. We recommend proceeding with the treatment plan involving bringing the patient back for further care."

"We need to drive the Tian Shuttle, a long journey of 278 kilometers, to transport the Zhu Rong ship back to the Oasis No. 1 shelter intact, so that the surgery can be performed in a constant temperature environment."

"Wait a minute." Gu Yu suddenly interrupted Xuan Jian.

"Mysterious, the frequency of the turbulence in the Achilles rocky zone exceeds 15 Hz. The joints of the Zhu Rong are now extremely brittle, and even the best shock absorption system could shatter it halfway there."

"You're right, Captain. The probability of the Zhurong being shattered is 30%. We're reassessing... generating alternative plans..."

Finally, Xuanjian pulled up the supply list and identified an inconspicuous piece of equipment: the T-3 Nanopolymer Material Protective Shield.

"Captain, this is the dust cover we originally planned to use to cover supplies. It is made of double-layer graphene sandwiched with aerogel, which is not only dustproof, but also has excellent heat insulation and airtightness."

"You mean..." Gu Yu's eyes lit up, and his mind instantly caught up with the rhythm.

"We can convert it into a field thermal tent."

Xuanjian quickly generated modification blueprints on the screen: "We can cover the Zhurong ship with it to create a relatively sealed space. Then we can connect a high-pressure resistant hose and insert it directly into the tent."

"With a continuous pumping of gas heated to 20 degrees Celsius by nuclear waste heat, it is estimated that in just half an hour, this tent will become a warm tent on the Martian wasteland."

"Once the core temperature of the Zhurong warship rises above zero degrees Celsius and the metal regains its toughness, we can directly have the Shen Gong robotic arm pierce the tent and perform surgery on the spot under the protection of hot air!"

Gu Yu clenched his fist. "A genius idea! It's like building a sauna on the Antarctic ice sheet to rescue someone. Let's do it!"

"Very good, that solves the repair problem." Gu Yu continued with the second question, "We woke it up, but the Zhurong rover has an autonomous operating system."

"How do we command it to work for us? I don't recall having any authorization to control a Mars rover from over twenty years ago in my permissions list."

"You don't have it, but I do." Xuanjian's voice carried a strange confidence. "The Zhurong's operating system, its firewall is now practically useless to me."

"Once the physical connection is established, I can gain full control of it within 300 seconds and directly operate its communication module."

"The last, and most crucial, question," Gu Yu's gaze deepened, "Tianwen-1 has been drifting in orbit for four years. Is its attitude still stable?"

"Is its high-gain antenna still pointed at Mars? If it's facing away from us, everything we've done is pointless."

[Multivariate coupling simulation in progress...]

Xuanjian became engrossed in a long calculation... a dazzling array of variables flashed across the screen.

A few minutes later, it gave a chilling number.

"Based on the 4-year runaway drift model, Tianwen-1 is currently in a complex state of 'precession + tumbling.' The probability that its high-gain antenna is pointing directly at the Martian surface at any given moment is... only 4.7%."

"On average, we only have a theoretical window of about 14 minutes every 33 hours. And the timing of the window is completely random."

"Four point seven percent..."

Gu Yu muttered to himself, "If we take into account the risk of the Zhu Rong ship failing to be repaired, the overall success rate of the entire plan will be diluted to less than 2%."

This is a gamble that any rational engineer would never take.

"Captain, if you are unwilling to risk a long expedition, we have an alternative with a lower success rate but a safer one."

"We can use the publicly available technical manual of the Zhurong satellite to try to replicate an X-band transmitter with completely identical physical layer parameters using 3D printing, and then combine it with a self-made high-gain parabolic antenna array to saturate the broadcast to Tianwen-1."

What are the chances of this plan succeeding?

Estimated success rate: 0.05%.

"The biggest challenge is that military-grade dynamic keys and handshake verification codes will never appear in publicly available manuals. We can only exhaustively search for time-series sequences using computing power, with a matching probability of less than one in ten thousand."

Xuanjian gave the final assessment: "Captain, in other words, the essence of Plan B is to try to open a military-grade safe across four million kilometers without a key, using a 3D-printed fake wire."

Gu Yu stared at that glaring 0.05% and remained silent for a long time.