Is learning a foreign language better for tourism and foreign trade?

It is suggested that customers who develop tourism foreign trade English mainly by mail. After discussing the price and trading conditions, customers will come to the factory for on-the-spot inspection or inspect the goods after production. So the so-called foreign language negotiation is mainly the plot in TV series. The main work of customers coming to China is not all business, but many of them are tourism, so playing with customers is the key!