Is Mother Nanhai the Guanyin Bodhisattva in Nanhai?

Mother Nanhai is the common name of Guanyin Bodhisattva.

"Nanhai Mother" is a common name for "Nanhai Guanyin" Bodhisattva in some coastal villages in China, but it should actually be a secular name for Guanyin Bodhisattva's 33-year-old female body and lay female body. When a child is born, people have the custom of "adopting" the child to the "Nanhai old mother" and let the Bodhisattva "old mother" bless the child to grow up safely. There are also some evil people who claim to be followers of the "mother of the South China Sea" to benefit others.