更替

更替	gēng tì	to take over (from one another) / to alternate / to replace / to relay
更	gēng	to change or replace / to experience / one of the five two-hour periods into which the night was formerly divided / watch (e.g. of a sentry or guard)
更	gèng	more / even more / further / still / still more
替	tì	to substitute for / to take the place of / to replace / for / on behalf of / to stand in for