Japan, Australia, Qatar, United Arab Emirates and Saudi Arabia all won, while Kuwait and North Korea scored a flurry of goals en route to victories.
Australia and Palestine players stood for a minute's silence ahead of their game, which was played in Kuwait due to the Israel-Hamas conflict.
Son was in top form as South Korea completed back-to-back wins at the start of their challenge for a place at the 2026 finals.
Players held a minute's silence ahead of kickoff before Souttar scored the game's only goal with an 18th-minute header.
Kuwait, meanwhile, thrashed Afghanistan 4-0 away to move into second place in Group A behind Qatar.
Persons:
Korea's Son Heung, Min, Tingshu Wang, Ueda, Heung, Son, Yan Junling, Lee Kang, Jung Seung, Yan, Thais, Suphanat Mueanta, Mano Polking's, Ayase Ueda, Hajime Moriyasu's, Jong Il Gwan, Harry Souttar, Kuwait's Jaber Al, Souttar, Oston Orunov, Igor Sergeev, Mohanad Ali, Jesus Casas, Darren Lok, Amadoni Kamolov, Saudi Arabia's Saleh Al Shehri, Jordan, Abdalla, Ali Mabkhout, Michael Church, Angelica Medina, Toby Davis
Organizations:
Soccer Football, AFC, Shenzhen Universiade Sports Centre, REUTERS, China, Japan, North Korea, Thailand, Singapore, North, Syrians, Syria, Palestine, Ahmad, Iraq, Vietnam, Malaysia, Taiwan, Kyrgyzstan, Qatar, United, Bahrain, Thomson
Locations:
China, Republic of Korea, Shenzhen, Republic, Korea's, Japan, South Korea, Australia, Qatar, Korea, Myanmar, Syria Australia, Palestine, HONG KONG, United Arab Emirates, Saudi Arabia, Kuwait, North, Israel, Syria, Jeddah, North Korea, Yangon, Australia's, Gaza, Lebanon, Bangladesh, Uzbekistan, Iran, Hong Kong, Turkmenistan, Vietnam, Philippines, Indonesia, Manila, Oman, India, Yemen, Nepal, Tajikistan, Pakistan, Islamabad, Saudi, Afghanistan