。 First, about the Dongchuan in the book and the Dongchuan in reality. Obviously, the Dongchuan City in the book is not in the mountains, but on the edge of the mountains, about fifty miles away from the current Dongchuan District, adjacent to the Nanpan River. And Dongchuan City in the Qing Dynasty was actually in Huize County. This is mainly due to the difference in transport routes.

Second, on the choice of waterways. Yunnan copper internal transport, the Qing Dynasty is to take multiple ways at the same time, among which the Jinsha River waterway is a very important one, but the difficulty of digging this waterway is so high, it is daunting, and the Qing Dynasty spent a lot of money, and it is not completely smooth, usually only a few months a year can go, and the accident rate is very high. Moreover, this waterway also has to take the Yangtze River to go out of the river, and many copper boats can not cross the dangerous shoals, so they can only be changed to land transportation, and then take the boat after passing, which is very tossed.

It takes eight months for Yunnan copper to be transported from the Jinsha River waterway to the capital, which is not a good route.

The Hongshui River waterway, before the liberation, was able to pass the whole section of 50-ton boats, which shows that its hydrological conditions are better than those of the Jinsha River. Seventy-five years later, Daxing Hydropower made the wrong decision to build many hydropower stations, which led to the cut off of shipping.

And in many other considerations, Chen Ke chose the latter.

Third, some people say that it is impossible to reach Wuzhou by waterway from the Pearl River, which was true in the Song Dynasty, but this is the only way to pass through the Maritime Silk Road - because the two water systems are only separated by a mountain, the ancients dug the Ghost Gate Pass and connected the two water systems from the road. This has always been the main traffic artery of the southwest, and the products of the southwest are all from this road to the north to the Central Plains. When Su Shi was demoted to Hainan, he took a boat from the Xijiang River to the Beiliu River, then went ashore to pass the customs, and then took a boat down the Nanliu River.

I have to admit that I did make a mistake here. Because when I was checking the information, I saw the ancient canal of the north of the Mao, which communicated the Nanliu River and the Beiliu River from the waterway. But this canal was actually dug by Zhu Yuanzhang, and it only took about six kilometers to connect the Maolin section of the Nanliu River to the Beiliu River Beiliu section. Of course, before the liberation, the water level had dropped, and this section of the canal had become a monument. But now it is said that new canals are going to be dug again.

The information was checked last month, and it was too long, I only remembered that there was a canal, but I forgot that it was dug by Lao Zhu. That day, I thought about Chen Ke's three reasons why Qinzhou was inferior to Guangzhou, but I couldn't remember it. I'll let Wang Han dig it up later......

Fourth, on the issue of seafood, I have also checked the information very carefully. People by the sea know that seafood is not easy to preserve, and under the conditions that it could not be transported by air at that time, there was almost no seafood in Bianjing, so there was no trace of seafood in Tokyo Menghualu. Moreover, seafood has a strong fishy smell, so people in the Song Dynasty rarely eat it, and even if they do, they use spices to cover up its taste. But in Wang Han's opinion, this is a new thing after all, and it is no problem to entertain Chen Ke with local specialties.

Fifth. Although I've been busy being a dad lately, I won't be sloppy with my work, and you should trust me that I will definitely check it carefully before writing something that I don't know. Of course, the level is limited, and mistakes are inevitable, so corrections are welcome......

Sixth, ask for a few monthly passes, it's too bleak...... (To be continued)