Beware of his ultimate, although he is not immune to CC and is moving slow while using it, it leaves you a small window to strike him, watch out for every indicators which indicates that he is near you, if it's a bad match up leaving is easier.

When using Ying if you face a group of opponent, your heals becomes a bit less valuable, try to chain the illusion explosion spaw to keep up group damage and a bit of heal, also stay at distance but beware flankers as they can easily take you out

Using the flame bomb when Barik raise his shield is a good way to make him retreat as the flames will go through the shield and damage the enemies who are closed.

Bomb king is a burst type character, beside your anchor, avoid the fight or have a heal to support you.