They are the same brand, both are Hyundai cars.

It’s just that Hyundai Motor is a Korean company, and Beijing Hyundai is a joint venture established in Beijing by South Korea’s Hyundai Motor Company and BAIC Motor Corporation, each investing 50%. Each party holds 1/5 share to introduce domestically produced Hyundai cars. Some of the company's models, so called Beijing Hyundai, can use the Hyundai trademark.

Extended information:

In October 2002, Beijing Hyundai Motor Company was established. Then the fifth-generation Sonata was officially rolled off the production line as the first domestically produced model. At that time, Hyundai Sonata was popular all over the country and could be seen on the streets, especially major taxi companies, which were purchasing it.

The sixth- and seventh-generation Sonata are in an embarrassing situation in China. Since the fifth-generation Sonata was still in production, the sixth-generation entered the country as an imported car and was named "Yuxiang" , but the actual market response was very poor.

The seventh-generation Sonata was officially renamed Lingxiang, and many changes were made to the overseas version. The sales volume was better than that of Yuxiang, but it is undeniable that this is a failed product. Beijing Hyundai tried to be creative in design, but it ended up being self-defeating.

Baidu Encyclopedia—Beijing Hyundai

Baidu Encyclopedia—Hyundai Motor