You are downloading the WeChat XAP file v18.104.22.168 for Windows Phone. WeChat is a free and useful Social app: Free texting, voice messages, and video calls in your pocket. 400 million people love WeChat because it's fast, reliable, private, and always on. ... You can now download the offline XAP file to install & try it.
Download Locations for WeChat 22.214.171.124 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline WeChat XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.