How to approach Diaochan (Mage, Mid Lane):
• Diaochan is squishy — any hard CC chain deletes them. Save one reliable stun for their engage window.
• Shut them down early. Gank pre-4 to deny their first powerspike. A behind Diaochan is one of the weakest heroes on the map.
• Don't fight fair 1v1s. Diaochan excels in duels — collapse with numbers instead.