"A mother" or "A mother" means old woman, because the Cantonese "Ya" and "A" are the same words, so many Cantonese named place names often appear "Ya" and "A" exchange of words. The official name used in Macau is the name of the front of the Yapo well. "A mother" means old woman. The legend shows that a mother-in-law built a pool in this place to store mountain springs for residents to drink, the old man called the pool Yapojing, Portuguese means "mountain spring".