I Am Cheating in the Underworld for the Benefit of My Descendants

Mrs. Wang Zhang was just one day away from turning 100 years old. She gave birth to twelve children, but before she died, she found that none of her children were around. Black and White Wuchang was ordered to take her away, but she refused to die, just to wait for the children's last look. In the end, Mrs. Wang Zhang was brought to the underworld by Black and White Wuchang, which was also the beginning of her working for the welfare of her descendants in the underworld...