"奶奶" (nǎinai) is a term in Chinese that means "grandmother," while "萍" (píng) is a Chinese given name that means "duckweed." In Engpsh, you can translate "奶奶" as "grandmother" and "萍" as "Ping." If you want to refer to someone as "grandmother Ping," you could say something pke "Grandmother Ping is a kind and loving person."