The discussing ancestor ancestral hall commemorates the Chinese businessman first ancestor Wang Hai Holy Land. The people often the person named which does business “the merchant”. This noun stems from this, after yan the uncle died, his grandson earth has inherited his enterprise, no matter what the fire is positive. has first invented the horse-drawn vehicle, starts to break a horse; yan uncle's six th Sun Wanghai has invented the ox cart, starts to tame the cow, this is in the history book “sets up the soap jail, takes the horses and oxen, the thinking people are favorable” the record. “the soap” is the draft animal trough. “ the jail” is the draft animal circle. At that time discussed the tribe already to have the animal husbandry and the animal husbandry development. As a result of these development, discusses the tribe to be very quickly formidable, they produce the thing had too much, with own the horse-drawn vehicle, the ox cart pulls the cargo to do the transaction to the outside tribe. Outside the tribe was called them is the merchant, the meaning is business tribe's people came. “the merchant” this noun stems from this to continue until now, they are engaged in this activity becomes “the trade”, exchanges the goods are called “the commodity”.