The study looked at how methane gas is absorbed by deep coal under high temperatures and pressures. By doing experiments on coal samples from the Eastern Ordos Basin, researchers found that temperature and pressure are the main factors affecting methane absorption in deep coal. As pressure increases, the amount of methane absorbed by coal decreases. This means that at high temperatures, coal can't hold as much methane when pressure is high. The type of coal and other factors like ash content and moisture have less impact on methane absorption in deep coal compared to shallow coal. The traditional method used to study methane absorption in coal is not effective at high pressures.