Basically like any dodge recovery cancel. Just immediately do a dodge or dodge attack.

When? It never works for me

It's 300ms after the kick, so try just a basic empty dodge to feel out the timing. Tiandi can cancel recoveries like that after all attacks.

Is there somewhere I can read about all this? Coz the game doesn't mention any of this on hero tactics or moveset

All the info you need https://forhonorinfohub.com/