添油加醋

lit. to add oil and vinegar / fig. adding details while telling a story (to make it more interesting)

to add / to increase / to replenish

oil / fat / grease / petroleum / to apply tung oil, paint or varnish / oily / greasy / glib / cunning

to add / plus / (used after an adverb such as 不, 大, 稍 etc, and before a disyllabic verb, to indicate that the action of the verb is applied to sth or sb previously mentioned) / to apply (restrictions etc) to (sb) / to give (support, consideration etc) to (sth) / Canada (abbr. for 加拿大[Jia1 na2 da4]) / surname Jia

vinegar / jealousy (in love rivalry)