HCM City, Aug. 29 -- The Ho Chi Minh City Urban Railway 1 Co., Ltd. has announced that all passengers on the Ben Thanh - Suoi Tien metro line will be able to travel for free on National Day (September 2). Passengers can access free rides in one by scanning with a citizen ID card or a chip-embedded citizen ID card at the ticket gate, or by using a QR code generated via the HCMC Metro HURC app. If passengers purchase tickets in the usual way, the system will charge the fare and payments will not be refunded. To use the QR code method, passengers need to download the app, select the "QR Doc lap" function to generate a ticket, and scan it at the gate. This function will be available starting September 2 and is only valid for that day. The HCM...