SleepyXiao's Things

I forgot to save this particular manhua I read a while back, but it’s Chinese historical and the main character dresses in female clothing or something in the first chapter for the sake of plotting something against his childhood friend (who is an enemy if I remember correctly?). The main character had pale blue hair (a little on the darker side), and the childhood friend had black hair. I didn’t get that far in this manhua so that’s all I remember. The art is also pretty nice. I would really appreciate it if someone could share the title if they have it !