In order to accurately indicate the position of various places on the earth, people have assumed a coordinate system for the earth's surface, which is the latitude and longitude lines.

In 344 A.D., Alexander crossed the sea and invaded the south, followed by the eastward expedition, and the military geographer Nirkus searched for information along the way, preparing to draw a "map of the world". He found that the route of Alexander's expedition from west to east was similar in terms of the seasons and the length of the day. An important contribution was made – for the first time a line of latitude was drawn on the planet, from the Strait of Gibraltar to the Torus and the Himalayas to the Pacific Ocean.

Alexander's empire was short-lived and soon collapsed. But in the Egyptian city named after Alexandria, a famous library appeared, and Eratosthene, who had been the director for many years, was very knowledgeable and proficient in mathematics, astronomy, and geography. He calculated the circumference of the Earth to be 46,250 kilometres and drew a map of the world with seven meridians and six parallels.

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The key to the correct determination of latitude and longitude is the need for a "standard clock", and the progress of mechanical technology in the 18th century finally created the conditions for solving this long-standing problem. There is a watchmaker Harrison in Yorkshire, England, who spent 42 years manufacturing five chronographs in a row, each more precise and perfect than the other, and the accuracy is getting higher and higher. The fifth, which was the size of a pocket watch, caused an error of only 1/3 mile in determining longitude. Around the same time, a marine timepiece designed and manufactured by the French clockmaker Pierre Leroy was also put into use. At this point, the problem of determining longitude at sea has finally been preliminarily resolved.

Captain Ginter was a pirate at the end of the 17th century, latitude and longitude had been invented, but it was not a very precise latitude and longitude, and the error was very large, it was the latitude and longitude measured by Crodistolemy.

Ptolemy measured the latitude and longitude of important cities and strongholds in the Mediterranean, compiled eight volumes of geography, including the latitude and longitude of 8,000 places, and in order to make the latitude and longitude lines of the earth depict on a flat surface, he managed to draw the latitude and longitude lines into simple fan shapes, thus drawing a famous "Ptolemaic map".

In today's developed Internet, you can find a clear 'Ptolemaic map' in 100 \1 degree pictures on the Internet.

Chen Yan compared the 'Ptolemaic map', his finger moved on the map, longitude 44 degrees 10 minutes, latitude 66 degrees 18 minutes, the location is a desert island in the South Pacific, called Anatom Island, belonging to the territory of the southwest Pacific island nation of Vantua.

Chen Yan took a look at Anatom Island, which was formerly known as "Anetium Island". The southernmost island of Vanuatu in the Southwest Pacific Ocean. With a land area of 64 square kilometers, it is a volcanic island with fertile land and dense forests, producing sandalwood and coconut.

Chen Yan clicked on the valley \1 song map, zoomed in on the map scale, Anatom Island slowly enlarged on the map, Chen Yan took out the parchment scroll, and compared the map drawn on the parchment scroll with the Anatom Island on the valley and 1 song map, right, the parchment scroll map was drawn roughly, but, however, the atoll drawn on the parchment scroll map, the outline lines of the islands were all aligned.

Chen Yan knew that his way of thinking to find the clues to the treasure was right.

The last four numbers 44-10-66-18 on the parchment map represent latitude and longitude, 44 degrees 10 minutes longitude, 66 degrees 18 minutes longitude, this latitude and longitude is not the current latitude and longitude, but the latitude and longitude on the ancient 'Ptolemaic map'.

Anatom Island is buried with Captain Gint's treasure.

This treasure is not small, you know, Captain Gint robbed a *** pilgrim fleet from Merka in the Red Sea, and this pilgrim fleet belonged to Prince Olamphus, the ruler of the Mughal Empire in India. Over the next two years, William Ginter became a "terror on the sea" between the coastlines of Madagascar and Malabar, amassing a fortune in the process.

Coincidentally, Chen Yan found information about the sale of Anatom Island on the website of Vladdy Private Island Real Estate.

The selling price is 8 million US dollars, and 8 million US dollars is equivalent to about 65 million yuan.

Chen Yan plans to buy Anatom Island.

Nowadays, many rich people buy an island as the owner, and it has become a trend for the rich to buy an island.

Fahad Vladdy, a well-known island investor and president of Vladdy Private Island Real Estate, has sold more than 2,500 islands and is known as the "Island King of the World".

China has a "China Island Owners Alliance" that specializes in organizing overseas island purchases, and Lin Dong, the initiator of the China Island Owners Alliance, has more than 20 lake islands, more than 10 peninsulas and 2 islands.

The islands for sale are mainly distributed in Europe as well as the eastern islands of Canada, the islands of the West Coast of the United States, the Caribbean Islands, the islands of Central America, the islands of South America, the islands of Australia and New Zealand, the French Atlantic Islands and the islands of the Indian Ocean.

???? The island's main source is mainly privately owned, but there are also state-owned sources.

It is also possible to buy islands in China, but because they only have the right to use them for 50 years, the Chinese government established the Island Law in 2010, which stipulates that two-thirds or even four-fifths of the islands must be sold according to the authorities' instructions, and only a small part of the land can be developed freely. As a result, it is not popular with the rich.

Buying an island can only be a permanent ownership of the island, going to Fiji to buy an island is a 99-year leasehold, and buying an island in China is only 50 years of use right, no matter where you buy an island, and the sovereignty of the island still belongs to the state.

Chen Yan buys Anatom Island to buy is the freehold ownership of the island.

The purchase of Anatom Island will cost 65 million yuan, which is not a small number for Chen Yan.

Buying Apple's shares, from March to September, has risen by 87% in half a year, 34 million has become 63.5 million.

Chen Yan cleared all the Apple stocks in his hand, plus the reward of 4 million for Mango TV, plus the reward of 4 million for surviving Eurolua Island, a total of 67.5 million.

Chen Yan contacted Vladdy Private Island Properties.

Vladdy Private Island Properties is a private island buying and selling agency that pays a 5% brokerage fee.

After staying at home for half a month, Chen Yan got a visa and flew from Dinghai to Brisbane, Australia, and from Brisbane to Vanuatua.

On September 4th, Chen Yan arrived in Vanuatu, got off the plane, this place gave Chen Yan the impression of being simple, black African, the local people have very dark complexion, very curly hair, the airport where Chen Yan got off the plane is a small airport, the salute is carried by people, the entry is a very simple small counter, it feels not as good as a passenger station security check in a small county town in China, the air in this place is very fresh, pollution-free, the sky is very blue, it is said that the cattle raised here by Ri and 1 eat the best grass and then sell it back to RB.

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