It is noteworthy that when He Jiancheng was painting these frightening phenomena, although it is seemingly calm and collected, bur the true thing he outpoured are not horrific sentiment, it is a type of contrast between plants which on behalf of the lives and aerolite which symbolizes death.

Make this lower case.
it is noteworthy that when he jiancheng was painting these frightening phenomena, although it is seemingly calm and collected, bur the true thing he outpoured are not horrific sentiment, it is a type of contrast between plants which on behalf of the lives and aerolite which symbolizes death.