![A baby participates in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/32fb6d0cf72e4b8897048d3985a50ab7.jpg)
A baby participates in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)
![Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/634cea16222c4816b58e91757cb56e58.jpg)
Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)
![A baby drinks milk during the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/d8d26558e8874509b0350dc07a6c51a5.jpg)
A baby drinks milk during the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)
![A baby winner and its parents celebrate during the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/bcc9aea4d71c4dceb67e4efc0f6be80d.jpg)
A baby winner and its parents celebrate during the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)
![A baby participates in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/58601e22db464c89adf1f0c8300fd542.jpg)
A baby participates in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)
![Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/c42b9d954f2b4230b4f884ebafb02e05.jpg)
Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)
![Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/39b37ba7cefb4987b7fa3f3768d11f56.jpg)
Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)
![Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/6f79246811344e44a0106984f59b7d41.jpg)
Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)
![Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/3f357b57af10462d9daed139677c5bf7.jpg)
Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)
![Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)](http://www.ecns.cn/hd/2018/06/30/1d58195c8a6e4ecf8e4f69947639e7a9.jpg)
Babies participate in the Diaper Derby 2018 in New York, the United States, June 29, 2018. Diaper Derby 2018, a baby crawling contest, was held here on Friday. Around 30 babies competed to crawl across a 12-foot (3.66 meters) long mat. (Xinhua/Lin Bilin)