Xiaomi products are seen at a newly-opened Mi store in Porto, Portugal, on June 15, 2019. Chinese technology company Xiaomi opened its first official Mi store in Porto on June 1. (Photo: Xinhua)

Customers try Xiaomi products at a newly-opened Mi store in Porto, Portugal, on June 15, 2019. Chinese technology company Xiaomi opened its first official Mi store in Porto on June 1. (Photo: Xinhua)

Customers try Xiaomi products at a newly-opened Mi store in Porto, Portugal, on June 15, 2019. Chinese technology company Xiaomi opened its first official Mi store in Porto on June 1. (Photo: Xinhua)

People visit a newly-opened Mi store in Porto, Portugal, on June 15, 2019. Chinese technology company Xiaomi opened its first official Mi store in Porto on June 1. (Photo: Xinhua)

Customers try Xiaomi products at a newly-opened Mi store in Porto, Portugal, on June 15, 2019. Chinese technology company Xiaomi opened its first official Mi store in Porto on June 1. (Photo: Xinhua)

A customer is seen at a newly-opened Mi store in Porto, Portugal, on June 15, 2019. Chinese technology company Xiaomi opened its first official Mi store in Porto on June 1. (Photo: Xinhua)