No organization or force can be supported by just one person.

It requires the joint efforts of everyone, which is why Lin Xuan thought of training alchemists and weapon refiners. As for the art of array formation, Lin Xuan had no intention of teaching it to outsiders.

Firstly, the art of array formation is too extraordinary; the role a master of array formation can play on the battlefield is terrifying, so Lin Xuan dared not teach it rashly.

Secondly, the requirements to become a formation master are too high.

To this day, Lin Xuan has not met a suitable candidate.

Although alchemists and weapon refiners also have very high requirements, Lin Xuan has at least selected thirty members from each of them over the past three months to teach them alchemy and weapon refining techniques through the system.

The results over the past three months have been quite good.

There were none of them.

For the past three months, Hangu Pass has been peaceful, and the soldiers have been diligently cultivating their skills.

The Shanhe Army underwent a major expansion, and those who failed the assessment were unwilling to give up. They trained even harder, hoping to pass the assessment when the Shanhe Army expanded again.

Those soldiers who had passed the assessment and joined the Shanhe Army also dared not slack off.

Because the competition within the Mountain and River Army is extremely fierce, it employs an elimination system, with assessments conducted periodically, and those who fail the assessments will be eliminated.

Those who pass the assessment but rank last three times in a row will also be eliminated.

The competition was incredibly fierce, which made the soldiers of the Shanhe Army dare not slack off in the slightest. They even trained harder than before they joined the Shanhe Army.

In this atmosphere, the strength of the Shanhe Army, and even the entire Hangu Pass, is rapidly increasing.