Developing an Aerospace Fighter Just to Get Out of Prison

A letter bearing the designation of a Baidi aerospace fighter was mailed to Longhang Yifei.

"Is this the concept proposed ten years ago?"

"I can't believe someone actually completed it. What's the return address?"

Chief Engineer Tang asked in shock.

"The mailing address seems to be Xingcheng Prison."

Someone answered in astonishment.

"Seal off this place immediately. Call the Investigation Bureau and the Secrecy Bureau and have them come over."

"Also, find the sender at once and bring them here!"

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.