The two shows are Chinese Dating Shows with man and woman "living together", but with some differences, like live and love is at a island when heart signal is at the town, but if people watched one they might like the other one.
I mean at the end of the day, both are dating shows, however live and love is mostly a survival kinda dating show. (that's the vibe I get by watching the first 2 episodes), however yes I do season 4 has a more homely vibe to it, if you get what I mean.