You Were Told to Guard the Coffin, Not Marry the Person Inside

The elderly people in our village all prepare their own coffins in advance. The better the coffin, the more face you have in the village, and even in the underworld you'll be treated with respect. My grandfather wanted to save face while alive and earn a name for himself after death, so he went into the mountains and stole a priceless crystal coffin! The day he died, I opened it and found a woman inside. That was how I embarked on a mysterious, uncanny path between yin and yang. To defy fate and change my destiny, I have slain vengeful ghosts, subdued evil spirits, broken feng shui curses, and buried seven wicked gods...