It is understood that the current Asian Football Association is studying the specific time of the 1/8 final. According to the original competition schedule of the Asian Football Association, the first round of the 1st quarter final of the Asian Championship will be held from 26 to 28 August, and the second round will be held from 16 to 18 September. The semi-finals will be held in October and the finals in November. However, so far, FIFA has not decided whether the annual World Cup will be held properly, because FIFA President Invantino has been trying to introduce a new World Club Championship to replace the current World Cup.
Therefore, after the end of last years World Club Cup, there is no clear statement about the 2019 and future World Club Cup. In this case, AFC is also waiting for FIFAs final decision. Once the World Club Cup is not played, the Asian Championship this year may be postponed to December as a whole. Therefore, this is also the reason why the Asian Football Association has not yet determined the specific time of the 1/8 final. However, it is certain that the 1/8 final will not start until August after the Asian Champions League group match is over.
Source: Editor-in-Charge of Madexing: Xu Song_NS1943