The Russians liked them so much they copied it .......exactly
Tupelov TU-4 "Bull"
From Wiki:
The U.S. twice refused to supply the Soviet Union with B-29s under
Lend Lease.
[1][2] However, on four occasions during 1944, individual B-29s made emergency landings in Soviet territory and one crashed after the crew bailed out.
[3] In accordance with the
Soviet–Japanese Neutrality Pact, the Soviets were neutral in the
Pacific War and the bombers were therefore interned and kept by the Soviets. Despite Soviet neutrality, America demanded the return of the bombers, but the Soviets refused.
[4] Three repairable B-29s were flown to Moscow and delivered to the
Tupolev OKB. One B-29 was dismantled, the second was used for flight tests and training, and the third one was left as a standard for cross-reference.
There were variants....some Chinese.....some different engines and ASW equipment