All Ghosts Seek Their Lives, I Come from the Sky Coffin

I was born with all five senses lost and all my limbs destroyed, just like a human pig. My grandfather disappeared for three days, and when he came back he was covered in bruises and scars, but I miraculously grew limbs on the second day. However, my grandma's ghost lingered after her death and she took me to be buried with her. To save my life, I had no choice but to be buried in the ground. When I came out again, I stepped into that unknown world. The sky coffin suppresses the evil spirits, the dragon corpse pulls the coffin, the nine-star blood evil spirits entertain hundreds of ghosts... Amidst the series of weird and strange things, I accidentally discovered that all of these are inextricably linked to the sky coffin!