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Surname Huaiding (Huaiding ) , globally, is an extremely rare last name. Much more prevalently, Huaiding is the forename as well as the last name.
怀丁, 怀仃, 怀定, 怀锭, 怀顶, 怀鼎, 槐丁, 槐铤, and 槐鼎
Gu, Lu, Yi, Tan, Wei, Zhu, Wang, Qiao, Xiao, and Zhang