Editor's note: Kong Qingsi, a farmer in Jining, Shandong province, carved his personal WeChat QR code into the thin top surface of a leaf. He spent three days completing the delicate carving, which required precise manual dexterity. He said his hand-carved QR code functions as well as the digital original.
Kong displays his QR code, which he carved by hand into a leaf. [Photo/VCG]
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