Lots of Mausers were made in China. Some were made in Germany for China as well. Check Google for more information as it's quite extensive. Different calibers/cartridges including a 6.7 version many attribute the 270 Winchester to.
Your rifle appears to be a Model 24, which could have been made at one of four different arsenals.
It should be chambered in 8x57 Mauser
If the bore is VG to EXC $450. They don't seem to bring the premium that European 98s do. Strange, because a lot of them saw extensive action. I have never seen one that went through a factory thorough repair.
I have used a couple of these receivers from a time when they were offered for $20 each. The parts were interchangeable with their European cousins and they were every bit as precise.
I haven't seen many CLEAN or matching numbers Chinese Mod24 rifles. The one in the pics is about average.
They started making them around 1935 so your example is quite early. I believe they made them under Japanese occupation as well, up to around 1950.
I used to have one that was brought back by a now deceased friend from the Korean War. It was chambered in 8x57. I gave it to his son, along with the document his father had to bring it back to Canada with him. It had been ridden hard and put away wet by whomever had dropped it. No, he didn't have an interesting story other than he found it in a ditch covered in brush and debris, while looking for firewood.