A man demonstrating use of a 锤子/chuizi (hammer/mace). In the first half of the video he is wearing 飞鱼服/feiyufu (flying fish uniform), a type of hanfu originating in the Ming dynasty. At the end of the video he is wearing armor.
According the op, the chuizi weighs 8 jin (~4kg; ~8.8lb) and the armor weighs 38 jin (~19kg; ~41.9lb)
[ID: a screenshot of several tags:
Not to be gay but oh my fucking god. Oh my god. Jesus fucking Christ. Oh my god. Fucking shit jesus. Fuck. Oh my fucking Jesus fucking Christ. God in heaven. Holy fucking shit. /end ID].
(the caption by OP (under the video) describes what can be seen in the video. Several times during the video the chuizi seems to get almost too close to the camera, making the video even more captivating than the display of skill and grace alone.)