I finally got around to watching this one and it's actually pretty great. I wasn't sure what to expect because it's a lot of the same cast from Joy of life, but this series is actually much more fun and clearer to follow.

The bad:
I don't have too many nitpicks here. I think some of the young cast is not as good at acting but in general the leads are pretty well done. At times the hero is overpowered, but to be fair time traveling should be a pretty big advantage.

The good:
The play on gender stereotypes is the main theme of the show and not new but the screenwriters are not too heavy handed. Lastly the hero fights his way through the story using mostly logic and doing reasonable things. His clever solutions to problems are very enjoyable, particularly the "I am your father" sequence, though they involve a lot of luck too.

The great
The ML and FL have a very cute relationship that develops in a really natural way. In fact the relationship between the second FL and the ML is pretty interesting too, and has an organic, awkward dynamic that it's hard to find in cdrama land. There is also some very clever wordplay that unfortunately only comes across in Chinese.