When are there bricks with Shi Zhuan patterns?

The jade era of han fu. Shi Zhuan pattern is a brick in the era of Han Fuyu. 1973 Unearthed and collected in Nanchengzi at the foot of Dongtuan Mountain in the suburb of Jilin Province. Disable all. Now in Jilin Museum. Handmade reddish-brown pottery with sand. Its shape is divided into two types: strip and box. Long bricks are generally 2.5-4 cm thick and 4.5-9 cm wide. This square brick is 22 cm long, 5 cm wide and 2.7 cm thick. The brick surface is decorated with; Plaid pattern, diamond pattern, grass pattern, geometric pattern of eggs, etc. It seems to be printed in a mold. As a relic of Fuyu and other places in Wang Guofu.