A staff member of the Chinese Embassy scans a QR code of Alipay, a mobile payment app, in Seoul, South Korea, April 26, 2019. The Chinese Embassy in South Korea has introduced mobile payment for its consular services for convenience and efficiency since April 26, 2019. (Photos: Xinhua)

Roll-up banners to promote mobile payment are displayed in a hall of the Chinese Embassy in Seoul, South Korea, April 26, 2019. The Chinese Embassy in South Korea has introduced mobile payment for its consular services for convenience and efficiency since April 26, 2019.

Roll-up banners to promote mobile payment are displayed in a hall of the Chinese Embassy in Seoul, South Korea, April 26, 2019. The Chinese Embassy in South Korea has introduced mobile payment for its consular services for convenience and efficiency since April 26, 2019.

Signs of mobile payment are displayed in the Chinese Embassy in Seoul, South Korea, April 26, 2019. The Chinese Embassy in South Korea has introduced mobile payment for its consular services for convenience and efficiency since April 26, 2019.

A Chinese citizen uses mobile payment as she proceeds with consular service in the Chinese Embassy in Seoul, South Korea, April 26, 2019. The Chinese Embassy in South Korea has introduced mobile payment for its consular services for convenience and efficiency since April 26, 2019.