The Cross-Dressed Union

Both show reversed gender roles, though for Ye Cheng, the MCs live in a matriarchal society, while in The Cross-Dressed Union, the MCs are both cross dressing and so take on opposite gender roles. Both feature the man marrying into the woman's household as part of a political scheme.

Both leads crossdress and marry each other in disguise. In SL, FL doesn't crossdress for long while in YLYXG, it seems that they're both crossdressing consistently.