Bei Ming Shen Gong

[Swordsman83]

Is it true that one can absorb internal energy no limit (thousands or millions years of internal energy) and it won't harm the body ?

[a_tumiwa]

probably yes , because there was no description that said it would do any harm (except Duan Yu early stage)
yeah i know in your mind, this skill plus another Xiao Yao skill (young forever of TSTL),

live 1 thousand years and even dugu qiubai and sweeper monk are not your match