25: Seamless

The Level 2 Acid Rain Disaster lasted for a very long time.

It didn't stop until evening.

As the acid rain disaster ended, the white-winged insect plague that had been flying everywhere also suddenly disappeared.

It was unclear if they flew deep into the Green Mist Forest or burrowed underground.

As for Lu Yang, after completing his first transaction with the Black Knight, he couldn't stop smiling as he looked at the surging resources in his warehouse.

Resource Units: Level 1 Iron Mine 49050 units, Level 1 Wood 2802 units, Level 1 copper 26000 units.

Finally, he could upgrade the vehicle parts properly again.

Lu Yang first upgraded the train's iron armor on all seven carriages, including the locomotive, to Level 2.

Upgrading Level 1 Train Iron Armor to Level 2 Train Iron Armor required 800 units of Level 1 Iron Mine per carriage.

Previously, Lu Yang found it too expensive and didn't upgrade it.

But after experiencing the acid rain disaster, Lu Yang began to understand that upgrading the train's iron armor was very necessary.

If the Xinhuo Train had Level 2 Train Iron Armor at that time, even without 'Ceramic Anti-Acid Plating,' the short-term loss would not have been as high as 30%.

It could have lasted longer in the acid rain weather.

After all, not every disaster would have a good Samaritan giving an early warning.

If he encountered another disaster next time and couldn't react in time, and the train didn't have corresponding defensive vehicle parts, the train's iron armor would be the last line of defense.

Moreover, Level 2 Train Iron Armor was also essential for upgrading to a Level 3 Train.

As long as resources were sufficient, upgrading it first was always the right choice.

Of course, Lu Yang not only upgraded the iron armor of all train carriages to Level 2 but also spent 4500 units of Level 1 Iron Mine to upgrade the iron armor of the first three carriages, which mainly housed production-type vehicle parts, to Level 3.

This way, within the Donglin Plain, he wouldn't have to worry about suffering a devastating blow if suddenly attacked.

After all, within the Donglin Plain, the highest level other trains' vehicle parts could be upgraded to was Level 3.

The defensive capability of Level 3 Train Iron Armor was sufficient to resist most ordinary attacks.

At the very least, ordinary Level 3 rifles, even 14.5mm caliber Level 3 heavy machine guns, wouldn't easily break through the defense of Level 3 Train Iron Armor.

As for the locomotive, Lu Yang spent an additional 3000 + 6000 units, a total of 9000 units of Level 1 Iron Mine, to directly upgrade it to Level 5.

The characteristic of Level 5 Train Iron Armor was a bit strange, called 'Integrated Whole.'

'Integrated Whole': The entire train is considered a single entity. When attacked, unless all carriages are completely damaged, the train is still considered a single entity and can maintain normal operation.

Lu Yang didn't know if his understanding was correct.

To verify his conjecture, he immediately built a new carriage.

This carriage was just the most ordinary type. When not connected to the Xinhuo Train, even a Level 1 flintlock rifle could easily punch a large bullet hole through its carriage's iron plating with one shot.

After connecting it to the Xinhuo Train, the Level 1 flintlock rifle could still cause damage to its carriage's iron plating, but the bullet's penetration was significantly reduced when fired from the same distance, ultimately failing to pierce the carriage's iron plating and getting stuck in the body.

Then, Lu Yang deliberately aimed at the wheels and used a Level 2 machine gun to continuously strafe them.

The wheels, without added iron armor, were as fragile as paper under the continuous fire of a Level 2 machine gun with Level 2 bullets. In no time, they were shredded by the Gale Type I, appearing severely broken; apart from the axle, the shape of the wheels was almost unrecognizable.

However, when the Xinhuo Train moved, the newly added carriage could still move along with it.

Only the other carriages that had Level 2 Train Iron Armor installed showed slight wear and tear at the same time.

As for the first three carriages with Level 3 Train Iron Armor and the locomotive with Level 5 Train Iron Armor, they showed no reaction.

At this point, Lu Yang roughly understood the function of 'Integrated Whole.'

With 'Integrated Whole,' when facing attacks of the same or higher level, the train carriages would still take damage, but the damage would be transferred to be borne by the train as a whole.

For example, when attacked by Level 2 bullets, carriages with only Level 2 iron armor would suffer minor damage.

But carriages with Level 3 Train Armor would not.

As long as all carriages were not completely destroyed, the train could continue to operate normally.

Understanding the function of 'Integrated Whole,' Lu Yang's face visibly brightened with joy.

This characteristic is excellent!

With this characteristic.

In the future, the Xinhuo Train would no longer have to worry about being cut in half if it encountered a sudden attack in the middle.

As long as the opponent couldn't break through the locomotive's defense.

Even if the rear carriages would normally be shredded, they could maintain their general integrity and continue to move. If an attack exceeded the locomotive's damage absorption limit, the connection would be directly severed.

At that time, it would definitely disrupt the attacker's expectations, and might even cause them to lose more than they gained.

Brilliant!

Absolutely brilliant!!!