This is my first time watching a crime mystery c-drama but the i love it. The storyline its more like Mystery Queen(kdrama) vibes but it did not copy the story its very different and i love it it has only 21 episodes becoz im not a fan of lot of episodes it bores me the whole time. And i like the fast paced of this drama and with more twist and turn of events and also very entertaining to watch. The acting of wang kai and ava wang are both PERFECT in executing ther respective roles esp. With ava wang im so in love with her role as xuxu its so extraordinary and shes so cute and quirky i cant heheheh and wang kai is so hot when he is into fighting scenes it makes my flutter and melt huhuhuu i love him. I hope theres a season 2 but its a cliffhanger so it might be in the works. I highly recommend yall watch this drama it is one of the RAREST GEMS OF C-DRAMAS that are worth watching for.