The Bo family, the Huang family, the Chen family, and four or five other families live in Zhenzhou Bay, which is the seat of Jiyang County. Zhenzhou Hongtao knows where it is, it is the ancient name of Sanya City, as for this Jiyang County, Hong Tao and Chen Mingen and Huang Hai, two people who have seen more widely in the Tan family, chatted for a long time, and finally knew what it was, and thus also knew the general division of the Nandao administrative region in the Southern Song Dynasty.

At this time, Hainan Island was not a separate administrative region, it was part of Quang Nam West Road. As for the places included in Guangnan West Road, Chen Mingen and Huang Hai can't say clearly, although they have seen a lot, but no one has ever been out of the sea area of Hainan Island, at most they went to Qiongzhou Mansion to help the imperial court pull rice, and pulled rice from the Leizhou Peninsula opposite to Qiongzhou Mansion. Hong Tao probably imagined that this Qiongzhou Mansion should be Haikou City in later generations.

Hainan Island in this era was a state capital under Guangnan West Road, called Qiongzhou Mansion. However, the Qiongzhou government does not govern the whole of Hainan Island, and its jurisdiction area is only five counties: Qiongshan County, Lingao County, Chengmai County, Wenchang County, and Lehui County. The names of these five counties are similar to those of later generations, and Hong Tao compared them according to the map in his mind, Qiongshan County should be Qiongshan District of Haikou City; Lingao County and later Lingao County should be one place; Wenchang County also had it in later generations, but it was upgraded to a prefecture-level city; Chengmai County also has it in later generations, but Hong Tao of Lehui County does not know where it is. However, according to the distribution of this jurisdiction, it is likely to be Qionghai City in the later generations, which means that Qiongzhou Prefecture has jurisdiction over the developed areas in the northern part of Hainan Island.

Then who will manage the three sides of the southwest and the east? In addition to this Qiongzhou Prefecture, the Song Dynasty also set up three military towns on Hainan Island, namely the Nanning Army, the Wan'an Army, and the Jiyang Army. This army is not a county, these places are very underdeveloped, and there are many local ethnic minorities, so it is not under the jurisdiction of the Song Dynasty government, but under the management of military towns, a bit like the military district in later generations.

There are three counties under the jurisdiction of the Nanning Army, namely Changhua, Thanksgiving, and Yilun, and the military rule is Danzhou. Changhua may be the port of Changhua in later generations; Thanksgiving Hongtao has also been there, that is, the Dongfang City of the later generations, where there is a Thanksgiving Town; Hongtao in Yilun County is really not clear, and it is estimated that it is also near the southwest of the island; Danzhou is easy to find, and there is also Danzhou City on Hainan Island in later generations.

The Wan'an Army has jurisdiction over two counties, namely Wan'an County and Lingshui County, and the military rule is Wanning. Hongtao of Wan'an County has no impression, Lingshui County and Wanning City are must-see attractions for future tour groups, and there are many Li custom villages to visit.

The Jiyang Army has jurisdiction over three counties, namely Ya County, Linzhen County, and Ningyuan County, and the army governs Zhenzhou. Ya County is the Ya Town that Chen Mingen will go to tomorrow, Ningyuan County is on the west side of the Ningyuan River, and Hong Tao of Linzhen County knows that it is part of Sanya City in the future, and this Zhenzhou is the place where Sanya City is by the sea.

One state and three armies are the administrative divisions of the Southern Song Dynasty on Hainan Island, and these four administrative regions have no command relationship with each other, and are all responsible to Guangnan West Road. But what about a large area in the middle of Hainan Island? Doesn't anyone care?

Indeed, in the middle of Hainan Island is a mountainous area, where the Li ethnic minority gathers, and no one can control it. The reason why three military towns were set up to surround the middle was to prevent these ethnic minorities from rebelling. However, the closer you are to the edge of the island, the more docile the ethnic minorities are, and the relationship between the Tan family and the local Li people is good, and everyone is a discriminated against ethnic group, so don't be hostile to each other. The Li people exchanged chickens, ducks, pigs and textiles for fish and salt of the Tan family, which is a bit of economic complementarity, and the black and blue coarse cloth worn by the Tan people is woven by the Li people.

Hong Tao originally wanted to ask about the officials of the Song Dynasty court on Hainan Island at this time, but Chen Mingen and Huang Hai were embarrassed to tell Hong Tao that the biggest official they could see in their lives was the tax official in Zhenzhou City, who didn't even have a grade, and they had never seen any big official, let alone knew it. As for the price, they know a little bit, most of them are items closely related to their lives, but this price is also a bit troublesome, because in the Southern Song Dynasty, there were two currencies in parallel, one is called hui banknotes, and the other is copper coins.

If the government hires civilian labor, the wages given are this kind of banknotes, and if the imperial court wants to buy bulk goods from the people, it is also this kind of banknote. Although the face value of this kind of banknote is the same as that of copper coins, but among the people, ordinary people generally do not like to use this thing. So buying things with money and buying things with copper coins are two prices, and the price difference is very large. How much bigger? It's not clear elsewhere, anyway, in Zhenzhou City, this spread can fluctuate between ten and fifteen times.

For example, this spring's rice is 200 yuan per stone, which is the price of copper coins, but the price of banknotes is about 30 yuan. The price of wheat is more expensive on Hainan Island, and one stone costs four runs, and the banknote goes straight to 70 runs. Considering that the copper coins are currently only more than 800 yuan, the price difference between them and the banknotes is even greater. The price of rice and wheat on Hainan Island is much more expensive than that in the mainland, because there is not much arable land here, let alone wheat production, and most of the rice and flour are imported from the mainland.

As for how much this stone weighs, there is a big bucket in the boat in the Yellow Sea, and after it is filled with rice, Hong Tao fell into his clothes and carried it around, more than 10 catties. This ability to weigh by hand is also practiced by fishing, 20 catties of fish, Hong Tao with his hand to lift, you can estimate the eight or eight not far from ten, weighed, the error is not more than 10 percent. There are also fishermen's skills that are even more amazing, you don't need to get started, you can know the approximate weight when you look at it. This is all idle by the water, and it is practiced again and again, without it, the hands are familiar.

However, Hong Tao still doesn't know the weight unit of the Song Dynasty, because this bucket is volume, and if you use it to hold a bucket of rice, it is more than ten catties, and if you use it to hold a bucket of stones, it is not more than ten catties. Since he wants to build a ship and go to the open sea, there is no unified weights and measures, at least the weights and measures that can be converted by himself, and he will never be able to build a ship, and it is not very reliable to build it. Now the conversion relationship between the ruler of the Song Dynasty and the rice of later generations, Hong Tao basically figured it out, in the afternoon on the boat Hong Tao used a rope to compare the two nicks on the boat for a long time, if these two nicks are accurate, the Song ruler is almost equal to a foot in later generations, slightly shorter, can be ignored.