Huang notes that in addition to these "water" zang (shui means "water"), people also use "blood" zang (xue zang), which are covered with red paper, to carry out similar rites for women who have died in childbirth.
民間另外還有以紅色紙貼成的「血」，是專門超渡因難產而溺於血池的產婦，著有眾多冥魂信仰的民俗學者黃文博指出。