"Can I exchange it for money" Fang Xing sat in the cramped rental house, eagerly awaiting a response from the other end of the phone.,A man on the side proudly explained, "This is the nation's largest port. Food, daily necessities, and all kinds of industrial products come in and out here. This place holds millions of tons of goods.",This is a refrigerated storage room, with white mist hanging in the air. Large chunks of beef are neatly stacked inside.。