How did the name Cheng come from the character of water shortage?

First of all, we should make it clear that naming after eight characters is not necessarily what the five elements lack. Just take it as you ask.

Cheng Fengyun; The wind is the rain head and the cloud is the water source. Homophony rides the popular cloud.

Cheng; Homophony thunders in the wind.

Chengbo Port; Port of call; All belong to water.