 The city wall itself was built with rammed earth , a technique also detailed in Yingzao Fashi , vol . III , " Standards for Moat , Stronghold and Masonry Work " : 
 The city wall itself was built with rammed earth , a technique also detailed in Yingzao Fashi , vol . III , " Standards for Moat , Stronghold and Masonry Work " : 
The city wall itself was built with rammed earth , a technique also detailed in Yingzao Fashi , vol . III , " Standards for Moat , Stronghold and Masonry Work " :