Which city does Jing Ke refer to?

If lobbyist Beijing is a city, it should be the abbreviation of Hakka Beijing, referring to Huizhou City, Guangdong Province. Hakka is a dialect of Han nationality in China, and there are many overseas Chinese who speak Hakka. Most of them are from Huizhou City, Meizhou City, Guangdong Province and Longyan City, Fujian Province (Yongding County).

I am from Yuanzhou Town, Boluo County, Huizhou, and my ancestors were from Heyuan County. My hometown dialect is the most special sub-dialect in Hakka dialect system. Its official name is Shui Yuan dialect, and the locals call themselves local dialects. Our local dialect is very different from Hakka dialect in other places. In our local area, there are two differences between "Hakkas" and "locals". Shanke guys speak orthodox Hakka, and we locals speak Shuiyuan dialect. Hakka clans can be traced back to ancient Central Plains immigrants (Jin and Tang Dynasties), and Huizhou is an important place in the history of Hakka clans. Ganzhou is the cradle of Hakka, Tingzhou is the former residence of Hakka, Meizhou in Guangdong is the hometown of Hakka overseas Chinese, and Huizhou is the mother of Hakka. Because the Hakka clan was formed in Huizhou, the immigrants who moved south from the Central Plains in ancient times were considered to belong to Guangdong, Fujian and Jiangxi respectively when they settled in Meizhou, Tingzhou and Ganzhou, and they have not yet formed an independent clan. Only in Huizhou did they formally form an independent clan.

Therefore, Ganzhou, Tingzhou, Meizhou and Huizhou are recognized as "four sources of Hakka" or "four states of Hakka". Among them, Ganzhou is the ancestral home of Hakka, Tingzhou is the ancient state of Hakka (Changting County, Longyan City, Fujian Province), Meizhou is known as the world's Hakka capital, and Huizhou is known as the Hakka capital. Ninghua is called the first town of Hakka, and Heyuan is called the ancient town of Hakka. There are also many people who speak Hakka in Taiwan Province Province. Hakka is one of the four major ethnic groups in Taiwan Province Province (the other three are Minnan, aborigines and other provinces).