Promote my App in China

I want to promote my Apps in China through China social networks, preferred a China person , some of my Apps:

- I can help you with discounts links for my iPhone and iPad apps, this will help to attract users
App 1 (Scanner translator) link : https://apps.apple.com/app/id1441227627
offer (Scanner translator 28% discount) link : https://apple.co/3DbWhaK

App 2 (Safari and internt Translator) link : https://apps.apple.com/app/id1452092365

App 3 (Find My Family and friends ) link : https://apps.apple.com/app/id1489353280
offer (Scanner translator 60% discount) link : https://apple.co/3No2BR8

App 4 (Speak translator ) link : https://apps.apple.com/app/id1249685934
offer (Scanner translator 60% discount) link : https://apple.co/3DsHpoR


App5 (Math Solver) link : https://apps.apple.com/app/id1542525934
offer (Math Solver 50% discount) link : https://apple.co/3Nzv4no

The conversion rate must be very high, for example for every 100$ I spend I expect to get 300 -200 minmum subscribers , about 0.5$-0.33$ for every subscriber .

- We will try to work tighter for 3 day as a trial with 100$, so if got around 200 - 300 subscribers we will then start to work for 1 week after that for 2 weeks .. then for 1 month

Thank you