First Day Cover
首日封
Sobrescrito de 1.º Dia
ChinaLu Ban
Date of Issue : 24 August 2019
2-1 : Learning Skills Diligently
2-2 : Researching Techniques Tirelessly
Lu Ban was born Gongshu Ban, was a native of the Lu State in the Spring and Autumn Period. He was an eminent architectural engineer in ancient China.
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