Jiangsu Ganyu said that this statement is based on the recognition that Xufu Village in Ganyu is Xufu's hometown. This view was first put forward by Chinese geographer Luo Qixiang and Xu Fu research expert Wang Chenggong. They think that the starting point of Xu Fu's second crusade is near Lanshan or Lianyungang along the coast of Haizhou Bay, not far from Xu Fu's hometown, Xufu Village. He also asserted that Qin Shihuang had been to Langya three times and Ganyu twice. The last time Qin Shihuang traveled eastward (2 10 BC), he crossed the Yangtze River from the south to the sea, and when he reached Langya in the north, Xu Fu reunited with Qin Shihuang in his hometown and was ordered to go to sea again. In addition, according to Ganyu's "Investigation Materials of Xufu's Hometown Ancient Site", a piece of factory shipbuilding wood dating back to 2000 was found in the ancient river near Dawangfang Village in Ganyu, which was considered as a relic of Xufu's shipbuilding. Then it is proved that Xu Fu is building a ship here and crossing the sea east with a drip port, which is well-founded. It is clearly pointed out that in the thirty-seventh year of the first emperor, Qin Shihuang went on a patrol and came to the East Gate of Qin in May and June to hold a grand sea sacrifice for the completion of the East Gate of Qin and the crossing of the river by Xu Fudong. Chui fook led the team out of the dripping mouth and crossed eastward, making the plain wide and the king not coming.
The theory of navigation in Huangxian County (Longkou City) in Shandong Province is also mainly based on the theory that Huangxian County may be the hometown of Xu Fu. Li Yongxian, an expert on Xufu in Longkou City, once wrote that Xufu sailed in two seaports, namely, Xushan in Langya and the north bank of Huangxian County (now Dengzhou Bay). Not only can we find the basis from historical records, but also there are many ancient books and folklore, pointing out that Xu Fu set sail for the second time from Huang County's hometown, and Xu Fu set sail from the north coast of Huang County, which was later Dengzhou Bay. He also argued that in the thirty-seventh year of Qin Shihuang, Qin Shihuang once again believed Xu Fu's lies and equipped Xu Fu with a shooter for his second eastward crossing. He also personally shot a big fish in Zhifu (now Yantai), symbolizing clearing the way for Xu Fudong's crossing. Chui Fu sailed eastward for the second time and set sail on the north bank of Huangxian County (now Dengzhou Bay) in this sea area.
The main reason why Raoan (Yanshan) in Hebei set sail is that there are thousands of children's counties here. According to the Records of Yuanhe County written by Li Jifu in the Tang Dynasty, Rao 'an County, 90 miles north of the state, was a thousand children's county in the Han Dynasty, that is, a children's city before Qin Dynasty. The first emperor sent Xu Fu to send thousands of boys and girls to the sea to beg for Penglai, and named it after this city. Han thought it was a county in Bohai County. The spirit emperor set up Raoan county, where the land is rich and the people can live in peace. According to this, some scholars believe that Xu Fu recruited boys and girls in Yanshan County, together with hundreds of workers, sailors, archers and others, and finally went to sea through Wudigou, wandering around and finally arrived in Japan.
Xu Fu's theory of Xu Shan sailing is one of the places with the longest circulation and few historical records, which has a great influence. The main basis is that the Northern Song Dynasty's "Taiping Yuhuan Ji" quoted the cloud of "Three Qi Ji Ji Ji". The first emperor ordered Xu Fu, a warlock, to go to the sea to seek immortality medicine at the abbot mountain in Penglai, and blessed 2,000 boys and girls, because Shan Xu was called. Qi Cheng written by Qin also recorded that Xu Shan and alchemist Xu Fu sent two thousand boys and girls to the sea to collect herbs and never came back. The Book of Mending Glue, which was written in the years of the Republic of China, quoted St. Miracle as saying that Xiaozhushan was in the east of Xushan, where alchemist Xu Fu met 2,000 boys and girls and never returned to the sea to collect herbs. These records prove that Xushan is the place where Xu Fu went to the sea to seek immortality. From the position, Xushan is located in the south of Jiaozhou Bay, not far from Xufu's activity center. From then on, it is very likely to recruit boys and girls, skilled workers, sharpshooters and so on. Sail eastward. In terms of natural conditions, there are dense forests and excellent harbors, as well as conditions for manufacturing and berthing ships.
Langya (southwest of Jiaonan City) is currently considered by most scholars as the navigation port of Chui Fu Du Dong. First of all, Langya was economically developed and had a large population. During the Spring and Autumn Period, Langya was interpreted as the ancient capital of the powerful Yue State. During the Warring States period, Langya was a big city of Qi, where people lived and worked in peace and contentment and the economy was prosperous, which was a rare fertile ground. After the reunification of the Qin Dynasty, Langya was still one of the few central cities with developed politics, economy and culture in China at that time, and it was also the only county in 26 counties that was close to the sea. Therefore, Langya has a solid material foundation and rich population resources, and these conditions play a decisive role in raising materials and recruiting personnel for Xu Fu Du Dong, who spent tens of thousands of yuan. Secondly, besides Langya Mountain, there are Xushan and Zhushan nearby. There are a lot of high-quality wood on the mountain, and there are enough conditions to build wooden boats. Moreover, since the Spring and Autumn Period, Langya Port has been an excellent harbor and naval base. After the reunification of Qin Dynasty, Langya Port is adjacent to Qi, Yan, Wu and Yue in the north, which is a coastal landform eroded by granite, with vast waters and vast seas and excellent navigation conditions. Therefore, Xu Fu's second trip to sea was in Langya, which is recognized by most scholars. However, whether this is true or not needs further argumentation before a consensus can be reached.