Je was op zoek naar: 国家尤其须善意行事 (Chinees (Vereenvoudigd) - Engels)

国家尤其须善意行事，并遵守国际义务。
in particular, the state must act in good faith and in compliance with its international obligations.

* 以最有益于有关工作出发，诚意行事；
act in good faith for the best interest of the process;