MC wear into a comprehension book MC become the gold finger of ML MC became a painting ML is the protagonist/villain(?) of the book. ML was bullied usual plot ML was reborn ML went earlier to the treasure cave ML was fond of the painting because in his previous life it was the painting who protect his life The painting is a spiritual treasure. This life the MC took over the painting
Transmigrating into a Demon Spirit to Blow up the Entire World? I never read it so I don't think it will be what you're searching for, but the description gives me the vibes
Haha I am also trying to find it It’s not a fast wear novel It’s where the MC wear into a xianxia book as a ML (protagonist/villain??) gold finger The gold finger happens to be a painting ML was reborn and also blackened