The rigid wall for shelter of Kunpeng Xiangxi (Beijing) Technology Co., Ltd. is modularized, flexile and completely customizable. The rigid wall for shelter can be in the form of extended system or non-extended system and transported by air, land or sea. It complies with ISO 1496-1 standards and can be stacked in multiple heights. The kitchen, medical facilities, bath installations, billet or the command center can be configured by the extended system in fast deployment with just several people required.