Horse meat is eaten all over China, especially in the north and in the far western province of Xinjiang. It is also popular in Guilin, Guangxi's tourist city where there are many horse restaurants. These are usually identified by a no messing picture of a horse on their signage. There is at least one here in Liuzhou. Their horse noodles are very good. Horse is one of my favourite meats, only slightly pipped by donkey, but that's a tale for another day.
Adjacent Horse Meat Restaurants, Guilin, Guangxi
These horse meat sausages 咸马肠 (xián mǎ cháng) or 熏马场 (xūn mǎ cháng) are from Xinjiang and are heavily smoked.
Smoked horse meat jerky is also popular.