You may order the Mandarin correspondence courses from Emmaus.
Mailbox Club
https://www.mailboxclub.org/

You may order the Mandarin correspondence courses from the New Zealand Correspondence School of the Bible.
New Zealand Correspondence School of the Bible
http://www.nzcsb.org.nz/



If you have any questions or need help finding a particular video, tract, book or any other Christian resource in any language of the world, please contact  brianformissions@gmail.com



Bible Correspondence Courses

http://biblecorrespondencecourses.org/
https://www.facebook.com/Bible-Correspondence-Courses-844092292423763/