It is difficult to be a researcher in a foreign investment bank, and you have to be lucky. Basically, less than 0.5% of people in Peking University and Tsinghua have the opportunity to go to Goldman Sachs. Deutsche Bank, UBS, Morgan Stanley, etc. may be a little worse, but they can also be counted as an order of magnitude. It should be noted that such companies do not necessarily like to recruit masters, and undergraduate courses may be more popular because they need a blank sheet of youth.
If domestic securities companies rank higher, master's (or MBA) from first-class universities is more common. Generally speaking, they have a complex background of science and engineering+economy and finance, which gives them extra points and better academic performance. They have earned extra points for securities consulting research and CFA certificates. But like all job hunting, these (including master's degree) are not hard conditions. It's all about adding and subtracting points and rolling dice to see luck.
The basic requirements of domestic middle and lower securities companies should be similar, but the standards are slightly lower.
It is true that the fund rarely (not without) directly recruits fresh graduates. They don't like to cultivate people slowly, but prefer to dig up good analysts from sellers (especially securities companies).