A TH19 netplay patch from the Chinese community: https://www.bilibili.com/read/cv23669775
Virus scanned with ClamAV, readme translated by williewillus.
Make a fresh copy of the TH19 game folder, then copy the contents of udoalgnetplay-20230519.zip/udoalg_netplay over the game folder, overwriting any existing files.
Please read readme_en.docx after unzipping.