On the Bank of Xijiang River's flood control dyke, Yuanjiang Building not only witnessed the history of Zhaoqing before liberation, but also witnessed the history of Zhaoqing for more than 20 years. Ten years of competition between fishes and mussels have made Zhaoqing miss the best opportunity for development, and the flash-in-the-pan brilliance is only temporary. Now it has entered the semi-old era. Pottery clay and cement fly everywhere, making Zhaoqing rapidly aging, from a beautiful city with beautiful mountains and rivers to the city with the worst air in the province. PM2.5 is often the penultimate in the province. The perpetrators of history, let the river building read again. Witness it.