What's there to discuss beyond, "stop poisoning us"?
Are they bringing both Dogs and Ponys to this show?
China: Lift your bans on Chinese food imports.
US: No.
China: Lift your bans on Chinese food imports.
US: No.
China: Lift your bans on Chinese food imports.
US: No.
China: Lift your bans on Chinese food imports.
US: No.
China: Lift your bans on Chinese food imports.
US: No.
(repeat this 800 times).
These are “useful and constructive” conversations in the diplomatic parlance.