C167 Extreme Ice Sparrow
The level of a cultivator determined the size of the barrel. The Hong Meng zhenqi was accumulated within the barrel, and because it was affected by the level of a cultivator, it would not continue to accumulate zhenqi, and as for the attack, it was to push the accumulated Hong Meng zhenqi further.
No matter how big the barrel was, it would eventually run out of water.
Ling Hao