盟约

盟约	méng yuē	contract of alliance / oath or treaty between allies
盟	méng	oath / pledge / union / to ally / league, a subdivision corresponding to prefecture in Inner Mongolia
约	yāo	to weigh in a balance or on a scale
约	yuē	to make an appointment / to invite / approximately / pact / treaty / to economize / to restrict / to reduce (a fraction) / concise