说到

说到	shuō dào	to talk about / to mention / (preposition) as for
说	shuì	to persuade
说	shuō	to speak; to talk; to say / to explain; to comment / to scold; to tell off / (bound form) theory; doctrine
说	shuō	variant of 说
到	dào	to reach; to arrive / to leave for; to go to / to (a place); until (a time); up to (a point) / (verb complement indicating arriving at a place or reaching a point) / considerate; thoughtful; thorough