![Cole flower tai chi pattern appears in Chongqing(1/3)](http://www.ecns.cn/hd/2018/03/09/8f8119cf96004d1ab26486f8099ac88f.jpg)
The largest cole flower tai chi pattern can be found in Tongnan district, Southwest China's Chongqing municipality. The diagram is 236 meters in diameter and is formed with wheat and cole flowers. Tongnan holds a cole flower festival every March. (Photo provided to chinadaily.com.cn)