Link Click S2 EP3 spoilers

Ok so Shiguang softly touching hands (Lu Guang gently resting his on top of Cheng Xiaoshi's, Cheng Xiaoshi lifting his palm to support the weight) was so painfully soft, BUT what also got me was their conversation before hand.

Cheng Xiaoshi's just returned from Chen Bin's funeral (that whole scene was so sad omg😭) and he looks so tired and defeated — he practically slumps into the chair. Lu Guang doesn't say anything, just quietly supportive. And then Cheng Xiaoshi just has to say that he wants to help Chen Bin and his wife (wait, does she have a name? I can't remember), with such a pained expression and Lu Guang knows what he wants to do. Like, their relationship has developed in such a short time that Cheng Xiaoshi trusts that Lu Guang will allow him to use his powers, and Lu Guang trusts Cheng Xiaoshi to not try to change anything but provide comfort through the words Chen Bin's wife needs to hear.

They have a better understanding of each other's perspectives and have found a balance. And while the prolonged contact rather than their usual clapping could be a comfort thing (especially since we know Cheng Xiaoshi can dive by himself) and/or to minimise movement onu Guang's part, the gesture seems to convey: I am here and I trust you.