来信

来信	lái xìn	incoming letter / to send us a letter
来	lái	to come / (used as a substitute for a more specific verb) / hither (directional complement for motion toward the speaker, as in 回来) / ever since (as in 自古以来) / for the past (amount of time) / (prefix) the coming ...; the next ... (as in 来世) / (between two verbs) in order to / (after a round number) approximately / (used after 得 to indicate possibility, as in 谈得来, or after 不 to indicate impossibility, as in 吃不来)
信	xìn	letter / mail / CL:封 / to trust / to believe / to profess faith in / truthful / confidence / trust / at will / at random