The continuous rain at Hesheng Base was orchestrated by Feng Jun, for a simple reason—he suspected the Rain Prayer Array might have been exposed.
Last time, he had barely placed the Energy Stones when the Insect Race's attack ensued, raising his suspicions.
Since he was suspicious, he decided to test it out. Besides, he was late in delivering information last time, which caused harm to Hesheng, making him feel a bit guilty, like "I didn't kill Boren, yet Boren died because of me."
Mountain Master Feng now also pursued a clear mind, and he disliked encountering trouble during deliveries. He had many things to do, including continued cultivation; time was very precious, is it not?
Therefore, he occasionally activated the Rain Prayer Array to test the temper of the insects while assessing Hesheng's defense capacity; as for the consumption of Spirit Stones, it was not an issue.
Anyway, when he goes to collect goods, it's just a mere footprint, which doesn't take much time.
