Group 1 - ByteDance's subsidiary, Douyin Engine, has launched two short drama mini-programs on WeChat, named "Ju Ran Space" and "Le Meng Theater," both utilizing an IAA (In-App Advertising) model where users unlock episodes by watching ads [1] - The "Le Meng Theater" mini-program features a limited selection of short dramas, with only 12 available titles, and incorporates advertisements prominently throughout the user interface [3] - The advertising strategy includes showing ads after the first episode of each short drama, indicating a heavy reliance on ad monetization for revenue generation [3]