Jade Cong tube, Qijia culture (2300-1700 BCE)
- Image Number:K1C002,029N000,000,000PAC
Half white brown, half burnt black, However, the whole machine has been polished. The inner circle and the outer circle are cong shaped, the four sides are straight, the neck is slightly short, the inner and outer rings of the neck are round, the inner wall of the hole is polished smoothly, the nozzle is cut obliquely, and the whole device is tilted slightly when it is erected
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