The "Survival on the Train" game has bugs, it's really laggy!

Su Yuan stared at the silver treasure chest on the table, which radiated a soft silver light, his mouth practically stretched to his ears in a wide grin.

This "perfect stitching" talent is even more incredible than he imagined!

Two bronze treasure chests can be combined into one silver treasure chest. Keep in mind that even ten low-level items may not be as valuable as one higher-level item.

[Master, the iron has all been smelted!]

Just then, Little Fire's voice rang out, reporting the results of the task Su Yuan had just given it.

After obtaining Su Yuan's permission, it could directly use the items in the warehouse, including pig iron and heavy oil seaweed. With sufficient firepower, the smelting speed of these items was very fast.

It only took about ten minutes in total.

[A total of 595 units of pig iron were used, with 119 units lost. This yielded 476 standard iron blocks for you! How's that, Master? Pretty good, right?]

"Well done!" Su Yuan praised generously, then waved his hand and continued, "Go to the warehouse and get five more units of heavy-oil seaweed for yourself!"

Thank you, Master! You are so generous!

The little fire cheered, and the flames suddenly surged, happily devouring its "delicious food".

Su Yuan looked at its pathetic appearance and shook his head with a smile.

Now, the timber and iron are ready, everything is in place, only the final step is needed.

He took a deep breath, walked to the driver's seat, and brought up the train upgrade interface.

[Train Upgrade Requirement:]

Iron: 200/200 (Saved)

Timber: 200/200 (Saved)

[Would you like to use materials to upgrade your Tier 1 regular train to Tier 2?]

"Upgrade confirmed!"

Su Yuan clicked the confirm button without hesitation.

The moment he confirmed it, the entire train jolted violently!

"Buzz—!"

A deep rumble came from the bottom of the train, followed by dazzling blue lights shooting out from the gaps in the control panel, instantly turning the entire carriage into a deep blue ocean.

Su Yuan felt a violent tremor beneath his feet and quickly grabbed the wall beside him for support.

"Clang! Clang! Snap!"

Su Yuan noticed that the material of the wall seemed to have changed. It was no longer a thin sheet of iron, but had an additional thick layer of composite armor, giving people an unprecedented sense of security.

The entire upgrade process lasted a full five minutes.

When all the vibrations and sounds subsided, the dazzling blue light gradually faded, and the train's announcement finally came on again.

【ding dong——】

Congratulations! Your train has been successfully upgraded to Level 2!

[The train's basic attributes have been comprehensively upgraded!]

[Current train class: 2]

[Train Type: Level 2 Standard Train (The most well-balanced in all aspects, and also the most common train in the train world. It has already undergone one upgrade, adding new functional modules)]

Standard driving speed: 50km/h (Speed ​​of black fog spreading: 15km/h)

Maximum speed limit: 60km/h

[Basic defensive capabilities of the carriage: Elementary]

[Basic storage capacity: 200 slots]

[New features: Construction Workshop, Living Module.]

More customizable components have been unlocked. Please check the control panel for details.

Su Yuan looked at the train with great satisfaction.

With double the storage space, he no longer has to worry about having too much stuff and nowhere to put it.

The base speed has also reached 50 km/h, which was previously only possible with acceleration, and the maximum speed it can withstand has also reached 60 km/h.

Of course, a typical Pliers should be 40 kilometers per hour, but I was able to reach that speed because I overclocked the engine.

Most importantly, two new functional modules have been added!

"Building workshops? Living modules?"

With excitement, Su Yuan strode to the new control panel and clicked on the newly added icon.

First is the [Construction Workshop].

After clicking, an interface similar to 3D modeling software appeared in front of him.

In the center of the interface is a 3D model of your train, with various components that can be built and modified listed next to it.

[Buildable Components:]

【1、车顶了望台：需要铁x20，木材x10。提供一个360度无死角的视野，并可加装武器。（建造解锁需5列车币）】

2. Train Ram: Requires 50 Iron. Significantly increases the train's ramming ability, easily breaking through most obstacles. (Requires 5 Train Coins to build and unlock)

3. External Armor: Requires 100 Iron. Significantly increases the carriage's defense, but slightly reduces speed. (Unlocks with 8 Train Coins)

【4、轨道变更器：需要铁x15，铜x15，电子元件x1。可让列车驶入隐藏的岔道。（建造解锁需10列车币）】

【5、隐藏车厢接收器：需要铁x20，铜x15，电子元件x2。可用于回收废弃的无主车厢。（建造解锁需10列车币）】

After reviewing the five options provided by the train, Su Yuan nodded in satisfaction.

This is true survival on a train!

The thought of transforming a dilapidated train into an impregnable mobile fortress is exhilarating.

"The track changer and the hidden car receiver—these two are a must!"

These two items are key to exploring hidden stations and recovering carriages, and have the highest priority.

As for the copper and electronic components needed, Su Yuan thought of his only friend, Li Weiguo, who had acquired a lot of discarded computers. He would buy them from him later.

"No rush, let's take a look at the lifestyle module first."

Su Yuan exited the construction workshop and clicked on another newly added icon: the "Life Module".

[Lifestyle modules unlocked:]

[1. Simple Kitchen: Requires 30 Iron and 20 Wood. Allows safe cooking inside the carriage, includes a basic stove and ventilation system. (Requires 10 Train Coins to build and unlock)]

【2、净水系统：需要铁x15，塑料x10，活性炭x5。可将污染水源净化为可饮用的纯净水。（建造解锁需10列车币）】

3. Simple Bedroom: Requires 50 Wood and 20 Cloth. Creates a separate resting space, improving sleep quality and accelerating stamina recovery. (10 Train Coins required to unlock)

This module only has three items that can be added.

Each one requires 10 train coins to unlock.

However, its advantage lies in the fact that each item is very practical and can solve the player's survival problem.

These are the eight new items that can be added after upgrading to a Class II train.

Su Yuan thought of that chubby boy again. He could get some blueprints from him and add some modules that weren't on the train.

For example, the platform forecast blueprint is a module that won't appear after the train is upgraded.

"Little Fire, how are you feeling? Have there been any changes after the upgrade?" Su Yuan was in a great mood and tapped on the dashboard.

"Reporting, Master! I feel fantastic!" Little Fire's voice was filled with excitement. "I feel my core computing power has increased several times over! And my energy conversion efficiency is much higher, at least 10% higher!"

"Oh? Does that mean the loss rate has also decreased?"

Yes, Master! The loss rate when smelting pig iron is now controlled to around 15%!

"Not bad, not bad." Su Yuan nodded in satisfaction. "Work hard in the future, and you'll get your share of the rewards."

It is Little Fire's honor to serve its master!

Having successfully completed the major task of upgrading the train, Su Yuan was in high spirits.

He leaned back comfortably on the sofa and turned his gaze to the silver treasure chest he had placed on the table.

"Now, it's your turn."

Su Yuan took a deep breath and placed his hand on the silver treasure chest that emitted a soft silver light.

"Activate!"

"Clatter!"

With a crisp sound, the lid of the box popped open automatically.

This time, only two orbs of light flew out of the box.

One radiated a dazzling golden light, while the other was a deep blue glow.