The "Hangang Bus" makes its trial voyage on the Han River in Seoul, South Korea, Sept. 17, 2025. According to the Seoul metropolitan government, the "Hangang Bus" will officially begin operation on Sept. 18. (Xinhua)

The "Hangang Bus" makes its trial voyage on the Han River in Seoul, South Korea, Sept. 17, 2025. According to the Seoul metropolitan government, the "Hangang Bus" will officially begin operation on Sept. 18. (Xinhua)

The "Hangang Bus" makes its trial voyage on the Han River in Seoul, South Korea, Sept. 17, 2025. According to the Seoul metropolitan government, the "Hangang Bus" will officially begin operation on Sept. 18. (Xinhua)