[System Notification: Congratulations, host, you have obtained 1 Universal Key]

[Item Description: One-time use consumable. Theoretically, it can open all locks.]

Xi Xi's face first showed a look of surprise, but when she heard the words "disposable consumables", she couldn't help but feel a little dejected.

If I had known earlier that this thing could only be used once, I would have definitely drawn a whole bunch of keys...

She looked down at the silver key in her hand, which lacked the luxurious feel of a master key she had imagined. To put it bluntly, it could be described as plain and unadorned.

Upon closer inspection, the key was not only plain in appearance, but also had some slight rust on the handle... Xi Xi felt that such an old key might not even be picked up if it were thrown on the ground.

With a skeptical attitude, Xi Xi squatted down and lifted the heavy iron lock on the treasure chest.

She aimed the key at the keyhole, and the moment they made contact, one end of the key seeped in like liquid.

Immediately afterwards, a very slight "click" sound rang out, and the incredibly sturdy iron lock was opened with ease.

The universal key gradually dissipated into the air with a dazzling burst of light particles, while the heavy iron chain that was originally tightly connected to the treasure chest slammed heavily onto the ground, making a dull metallic clang.

Congratulations on obtaining a handheld mirror*1

Congratulations on receiving sunscreen spray *1

Congratulations on winning an 8-slice toast!

Congratulations on obtaining a Vehicle Companion Charm*1

Congratulations on obtaining Amphibious Component Charm *1

[Successfully obtained a high-level treasure chest*1. Congratulations, adventurer, you have gained 30 survival points.]

Xi Xi didn't have high expectations for the treasure chest, after all, her luck was so-so today.

However, when she saw that there were actually two talismans inside the treasure chest, she couldn't help but feel a surge of joy.

Compared to the treasure chests from the daytime, this locked treasure chest is definitely something special.

Xi Xi skipped over the ordinary supplies like handheld mirrors, sunscreen spray, and toast, and without hesitation took out the vehicle talisman and amphibious component talisman.

[Item Description: One-time consumable. Can be stored in a charm and carried with you.]

[Item Description: One-time consumable. Once the component is installed, the vehicle will have an amphibious transformation mode.]

Something's not right! As Xi Xi was reading the item prompts, her heart skipped a beat, like a lightning bolt flashing through her mind, making her instantly realize a crucial point.

Her movements were swift as the wind; she quickly opened the light screen and eagerly scanned the time displayed on it.

The clock had already passed midnight, and a new day had begun. However, at this moment, the game didn't seem to allow her to sign in.

Xi Xi frowned, trying hard to recall the information she had obtained earlier.

She finally remembered that not long ago, while having a meal, she had inadvertently glanced at the chat in the public chat, where some players said that the daily sign-in and fortune-telling could only be started at 6 a.m.

Thinking of this, a sense of doubt arose in Xi Xi's heart. What about the "Blessing with a Wise Pen" system? With a try-it-and-see attitude, she gently covered the misty blue tattoo on her wrist and silently chanted the summoning command in her heart, but what awaited her was a merciless system notification sound.

[System notification: You have used up your summoning attempts for today. Please try again tomorrow.]

"..." Xi Xi was speechless, as if the system's voice had been poured over her head.

So why was she drawing so frantically just now...? Her fixed mindset that a new day begins after midnight was so deeply ingrained that she didn't react at all in her panic.

Xi Xi sighed deeply and couldn't help but raise her hand to tap her own silly head.

The tapping made her realize something was wrong—her forehead was getting slightly warm!

"Is he getting a fever?" Xi Xi muttered to herself, her breathing becoming rapid.

After a moment of inner turmoil and a brief period of exhaustion, Xi Xi quickly rallied, squatted down, and took everything out of the treasure chest, packing it into her backpack.

Ultimately, a fever isn't a big deal. Especially a fever caused by catching a cold, it's probably just a low-grade fever at most.

In the terrifying post-apocalyptic environment of her previous life, Xi Xi inevitably suffered from both major and minor illnesses.

To be honest, I've gotten used to it all. A low-grade fever is relatively mild; it just passes if you tough it out.

After all, in such harsh living conditions, medicine is an extremely scarce and precious commodity, and it is impossible to find it anytime and anywhere.

Xi Xi poured herself another cup of hot water. She didn't need to think about it to understand that the desert night was too cold and biting, and on top of that, she had risked diving into the icy, stagnant water and spent the whole night running around in those wet clothes... All these factors combined must have caused her body to finally give out.

No wonder my mind is so muddled and my thoughts are all jumbled up...

"Oh well, I'm destined not to be able to take this treasure chest with me, so it's the same whether I open it sooner or later," Xi Xi muttered to herself, trying to comfort herself, while quickly packing up the supplies.

Once everything was ready, she put her backpack back on. The golden treasure chest vanished before her eyes, leaving only the enormous, seemingly heavy iron chain lying there all alone.

Xi Xi was slightly taken aback, but quickly recovered. She stepped forward, bent down, and picked up the iron chain. The chain was heavy and cold to the touch, and seemed to have nothing special about it.

[One treasure chest chain detected. Disassemble?]

Xi Xi raised an eyebrow, recalling her previous experience disassembling plastic bottles, and replied without hesitation, "Yes!"

The once cold and hard iron chain turned fiery red in the blink of an eye, as if it had been scorched in a raging fire, and billowing heat emanated from the joints of the chain.

Seeing this, Xi Xi couldn't help but take a step back, watching the changes unfold from a distance.

The scorching hot iron chain soon transformed into molten iron during smelting, slowly fusing together and eventually coalescing into a small cubic iron block about the size of a plastic fragment.

[Ding! Disassembly successful. Congratulations! You have obtained 1 metal fragment.]

"It really is metal shards!" Xi Xi's lips curled up slightly, revealing a barely perceptible smile. If she remembered correctly, these metal shards were an essential material for upgrading the workbench.

Thinking about this, Xi Xi suddenly felt that everything was worthwhile, and the depression in her heart dissipated a lot.

She strode confidently toward the newly revealed stone door where the mural had disappeared, took a deep breath, and then pushed it with all her might.