任意两个数都有等差中项吗简介：In his previous life, Zhu Cixiang was disabled and rarely had the opportunity to travel. He had never been to Ji County, Tianjin, which was Jizhou in this era, so he had no impression of Jizhou's human geography.
In his previous life, Zhu Cixiang was disabled and rarely had the opportunity to travel. He had never been to Ji County, Tianjin, which was Jizhou in this era, so he had no impression of Jizhou's human geography.
