Idk one of the trusted weibo account user posted it, she / he is 90% right about these Melons/ rumors... that saying no one can predict the Cdramas release date... so we have to wait for the official confirmation...
Dude chill down its not the first time or last time Normally Some Cdrama fan pages melons are almost correct...…
Dude there was a evidence for Where the dreams begin (It was in the leaked schedule of CCTV) to air last month... but it was cancelled last minute and released this month...
So it happens chill down... they will update it to 21 give them some time...
1 
Same for Netflix originals to Normally netflix releses their new series @12am PST, but MDL uses 12:00Am KST for them too..
So it confuses users and they think new episodes are already released but actually Nope...
They follow correct time standard for korean TV dramas though...
SYIM19L will do better both in SK and International...
KTL will do better in International and Okayish in SK...
Will watch both...
but MDL updates their time as 12:00am KST(So it appears as AUG 8th to some) ...
-Thanks...
So it happens chill down... they will update it to 21 give them some time...