Looking for a manhua/manhwa

1) The mc is living 2 living simultaneously idk how I forgot , it's not a vr of any game world, not sure about both worlds but 1 is a xianxia/wuxia world.

2) in this the mc transmigrates to the past and into some young master's body , it was ancient China or korea , and in 1st chapter a person kills a horse for the said young master.

I hope fellow seniors can enlighten this junior but suggesting some texts which matches these descriptions.