Each winner of the preliminary round progressed to the next stage.

The ranking of teams was determined as follows:[3] The first preliminary round was held in Mongolia[4] in September 2018.

[5] The second preliminary round was held in Taiwan[4] in November 2018.

[5] The final round was held in Busan, South Korea between 10 and 18 December 2019.

Per statistical convention in football, matches decided in extra time are counted as wins and losses, while matches decided by penalty shoot-out are counted as draws.