Shih Ming-teh
Garrison Command officials contend Chen confessed to seditious acts during his return to Taiwan, soliciting funds to support the anti-government "Formosa Magazine" and attempting to establish democratic reforms. They confronted him with photocopies of letters he had written to Shih Ming-teh while Shih was imprisoned. Wiretap records released in 2020 revealed that the Garrison Command became aware of Chen through a tapped conversation with Shih, and labeled him as a "traitor" on the basis of that conversation.