In many cases, the most important thing to study the land problem is to study the land system (who owns it, who cultivates it, and how to distribute the fruits of labor) and the corresponding tax system (this is mainly ancient history).

Ancient history: the well-field system under slavery (public land division, slave farming), the feudalization of the land system in the Spring and Autumn Period and the Warring States Period (allowing private land to exist, and feudal landlords to farm land for farmers and collect land rent), the complete establishment of the feudal land system in the Qin Dynasty, the manor economy of the big landlords in the Han Dynasty, two tax laws for tenancy adjustment in the Tang Dynasty, a series of reforms by Wang Anshi in the Song Dynasty, and then a part in the Ming and Qing Dynasties. We should focus on the reasons for the change of tax law, which are all related to the land system at that time, and in most cases, it is because the land merger is too serious. Qian Mu's Political Gains and Losses in Past Dynasties in China is recommended, with detailed historical data and accurate exposition, which is also very helpful to other aspects of China history.

Modern history (focusing on how to overthrow the changes and reasons of feudal land ownership and system in different periods)

I can't remember the specific content. I haven't seen it for four years Now, if you have any mistakes, you can check them yourself. First of all, the tiantian system of the Taiping Heavenly Kingdom, the people's livelihood in Sun Yat-sen's Three People's Principles, the people's livelihood in the new Three People's Principles, the land policy put forward by the * * * production party at the first and second national congresses (I can't remember whether it exists or not, so I can't remember it myself), the land reform movement of the * * * production party in the base areas during the National Revolution, the double exchanges and double reductions during the Anti-Japanese War, the subsequent agrarian revolution, and some minor changes later.

Land policy is very important, because land is very important, especially in China. China is a big agricultural country since ancient times, and agricultural production is the most important production activity. If you control the land, you control the production and the lifeline of the whole country. You should read Marx's works on productivity and relations of production to understand why land is so important in China. If you want to ask detailed questions, you can add them. I will continue to answer.