![](http://www.ecns.cn/hd/2020/12/23/486cf32f1d3240f3b30a93d028cd709e.jpg)
Frozen ice bubbles are seen in a river in Baishan City, Jilin Provicne, Dec. 22, 2020. The phenomenon is caused by dead organic matters. (Photo/VCG)
![](http://www.ecns.cn/hd/2020/12/23/321a1f62ce04423c899670f47b4543b2.jpg)
Frozen ice bubbles looking like towers are seen in a river in Baishan City, Jilin Provicne, Dec. 22, 2020. The phenomenon is caused by dead organic matters. (Photo/VCG)
![](http://www.ecns.cn/hd/2020/12/23/ed62fa45e0b4486aa0384da62157a1ad.jpg)
Frozen ice bubbles are seen in a river in Baishan City, Jilin Provicne, Dec. 22, 2020. The phenomenon is caused by dead organic matters. (Photo/VCG)