Some sections of the river are now protected as nature reserves.A stretch of the upstream Yangtze flowing through deep gorges in western Yunnan is part of the Three Parallel Rivers of Yunnan Protected Areas, a UNESCO World Heritage Site.In mid-2014 the Chinese government announced it was building a multi-tier transport network, comprising railways, roads and airports, to create a new economic belt alongside the river."Yangtze" was actually the name of Chang Jiang for the lower part from Nanjing to the river mouth at Shanghai.
However, due to the fact that Christian missionaries carried out their activities mainly in this area and were familiar with the name of this part of Chang Jiang, "Yangtze river" was used to refer to the whole Chang Jiang in the English language.
In modern Chinese, Yangtze is still used to refer to the lower part of Chang Jiang from Nanjing to the river mouth. Chang Jiang (长江/長江) is the modern Chinese name for the lower 2,884 km (1,792 mi) of the Yangtze from its confluence with the Min River at Yibin in Sichuan Province to the river mouth at Shanghai.