A video clip featuring Chinese builders swapping¹ out a bridge in downtown Beijing within 43 hours has gone viral on social media in China and abroad.

近日，国内外社交媒体网站上一段北京城区43小时"旧桥变新桥"的视频火速蹿红。

The two-minute time-lapse video recorded workers replacing the Sanyuanqiao cloverleaf junction².

这段两分钟的延时视频记录了工人更换三元桥的过程。

The project started at around 11 pm on Nov 13 and ended on Nov 15. The most challenging part of the overhaul³ was the replacement⁴ of the 1,300-ton bridge structure, which cost RMB39m.

工程于11月13日晚11点左右开启，15日结束，最具挑战性的部分就是1300吨桥梁的整体更换，耗资3900万元。

Many foreign viewers expressed their amazement⁵ at the "Chinese speed" and many asked whether this construction team does contract work overseas.

许多国外网友观看视频后表达了对"中国速度"的赞叹。很多人还问到这支工程队是否也承接海外项目。

The footage garnered⁶ more than 1,680,000 views on YouTube by Tuesday.

截至24日，这段视频在YouTube网站播放量已超过168万。