師兄？！你不是天津衛的嗎？

at the best --> at their best

agree.

watching --> seeing

this one still baffles me a little bit, as the original used "seeing". I am thinking both are OK here.

all the above children --> all those children

agree. It was caused by the Chinese 上述blah blah。

he was caught there by --> there he was caught by

agree，這個我的錯誤比較低級，哢哢。