守约

守约	shǒu yuē	to keep an appointment / to keep one's word
守	shǒu	to guard / to defend / to keep watch / to abide by the law / to observe (rules or ritual) / nearby / adjoining
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