Since ancient times, Dongguan has produced agarwood, and its fragrance is Guanxiang, which can sink to the bottom of the water as the top grade, so it is called "submerged fragrance", referred to as agarwood. Wanxiang Tree, alias Tooth Fragrant Tree and Daughter Fragrant Tree. The ancient Dongguan county had a vast territory. Today, Hong Kong, Shenzhen, Baoan, Zhongshan and Dongguan all belong to the ancient Dongguan county. Wanxiang agarwood, also known as "Wanxiang", is the only plant named after a place in China. According to historical records, woody incense (also known as Aquilaria sinensis, Aquilaria sinensis) was introduced to Guangdong in the Tang Dynasty, and was widely planted in the Song Dynasty. Because it was mainly concentrated in Dongguan, it was also known as woody incense. As early as more than 400 years ago in the Ming Dynasty, Guangdong formed four famous fairs, namely, incense market, medicine market, flower market and pearl market, among which the incense market, which bought and sold agarwood, was the most prosperous. In the Ming dynasty, every year in Guangdong, there was a smile on the tribute. At that time, Wanxiang not only sold well in China, but also was picked by manpower to sell in Hong Kong after processing, and exported to Southeast Asia in large quantities. It is said that Hong Kong was named after it, so it can be seen that the name of "Hong Kong" originated from Wanxiang.

Zhongshan City, known as Xiangshan County in ancient times, was far away from the mainland in ancient times, and was guarded by soldiers in the Tang Dynasty. It was Xiangshan Town and belonged to Wenshun Township, Dongguan County. The old "Records" said: It was named after the fragrant wood in the land. Today, there are very few fragrant wood in the county, so it is not because of the incense burner mountain. "It can be seen that Xiangshan was named before the Sui and Tang Dynasties, and it was named after the production of agarwood. By the time of the Northern Song Dynasty, agarwood was almost extinct.

Hainan agarwood was once the best in the world and was called "agar". Hainan agarwood has been a tribute of the imperial court since the Song Dynasty. Hainan was called Xiangzhou in ancient times. According to ancient records, Hainan Island in the Song, Ming and Qing Dynasties was a fragrant island, famous for its abundance of agarwood. A steady stream of Hainan agarwood was transported to the mainland through various channels. Hainan "According to the historical records, the record of incense production in Hainan Island can be traced back to Ren Fang's" Stories of Different Scenes "in Jin Dynasty:" Xiangzhou is in Zhuya County, and the exotic fragrance is often unknown. The rosin has been known for ten miles for thousands of years, which is also called ten miles. "

"During the Jin Dynasty, foreign countries also paid tribute to exotic incense, and Yangdi (Yangdi Yang Guang AD 568-618) did not count the agarwood fried in the volcano at night, and all the incense in Hainan was finished." It can be seen from the above that the history of producing agarwood in Hainan has reached 1400~ 1500 years.

Classification of Aquilaria sinensis origin in China incense literature. Classification of origin, the real wax is the highest, the second is the city, and the bottom is the Bohai mud. The fragrance of real wax is divided into three categories, the green ocean is excellent, followed by the three Luanhe rivers, and the Borough is weak. Lvyang, Sanliuan and Boluo are all real wax gardens. True wax, today's Khmer. Zhancheng, now Quang Nam province in southern Vietnam. Boni, Borneo today. In these places, agarwood is still imported into Taiwan Province today. The Khmer Bodhisattva Qinan is still loved by collectors, and Semonosa and Gongzhaimi are still memorable. What's more, it is produced by Boni and Sanfoqi (now Giant Harbor), which is called Fanxiang and thymelaeaceae Bracelet, and its name is Fanshen. The gas mine is fierce, and the price is like real wax. The green ocean is reduced by two-thirds, and the agarwood tree is regarded as half of the city. Obviously, Ye Tingjue gave the Khmer agarwood the highest evaluation, and it was still above the city.

Aquilaria sinensis was produced in other parts of Guangdong and western Guangdong as early as 1000 years ago, and as early as more than 800 years ago, Fan Chengda, the master of the ancient fragrance world, listed "Haibei" (part of Guangxi and western Guangdong) and Jiaojiao Guangxiang as the same products. See the following for details: The Story of Tianxiang: Thunder, culture, height and sinus are also the places where China produces incense, which are not bad compared with those in Hainan. There are many sellers, so the taker is quick. It is yellow ripe that does not wait for it to become a stack, and the stack does not wait for it to become heavy. Those who take advantage of it are also thieves. Compendium of Materia Medica: There are many places in Lingnan, especially near the sea.

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