Zhang Hansi (張漢思) was a military officer of the Chinese Five Dynasties and Ten Kingdoms Period state Min.
After Min's fall, he served under Liu Congxiao, who controlled Qingyuan Circuit (headquartered in modern Quanzhou, Fujian), in nominal submission to Southern Tang.
It is not known when Zhang Hansi was born or what his geographic origins were, as there were no biographies of his in traditional histories—although he was described as being old aged at the time of his eventual death.
In any case, as of 944, he was serving as an army officer at Min's Quan Prefecture (泉州, in modern Quanzhou, Fujian).
[2] It was said, though, that Zhang, on account of his old age, was incapable of governing the circuit, and most of the matters ended up being decided by Chen, whom he made the deputy military governor.
Zhang, surprised and not able to think what else to do, turned his seal to Chen, who then announced the transition to the officers and administrators and took over control of the circuit.