Jeju used to bristle with Chinese tourists who flocked to the South Korean island to enjoy its beach resorts and rugged landscape. But an industry set up to serve Chinese consumers shrivelled up almost overnight in March after Beijing stopped travel agencies from sending groups to South Korea in retaliation at Seoul’s decision to deploy a US missile defence system to protect itself against unpredictable North Korea.

The number of daily visitors from China dropped to 1,000 from more than 7,500 days earlier, according to official figures. The situation is similar in Seoul, where shopping areas once popular with Chinese tourists are deserted.

“Since March 15, I haven’t seen a single Chinese person come to our shop,” says one salesperson. Another adds: “The company is forcing us to take unpaid leave simply because of the declining number of Chinese tourists.”