证监会：资本市场理性投资、价值投资、长期投资的法治基础进一步夯实

This pattern is used to introduce the occasion, place, or context in which someone expresses an opinion or makes a statement. 在……上 is often used with meetings, forums, or events; 在……中 is similar but more general.

其中 is used to single out one important point from a larger whole that has just been mentioned. It often means 'among them,' 'in it,' or 'wherein' depending on context.

进一步 means 'further' or 'to a greater extent.' It is commonly placed before a verb or adjective to show additional development, strengthening, or deepening.

的 links a modifier to a noun. In formal written Chinese, it is often used to build complex noun phrases, such as 'the legal foundation of rational investment, value investment, and long-term investment.'

Chinese often places two or more verb-object phrases in parallel to list policies, actions, or goals in a concise formal style. This structure is very common in news and official writing.