Should the height and thickness of the east and west walls of the courtyard be the same?

Do the same. According to geomantic omen, the height and thickness of the courtyard wall should be consistent. If the height of the courtyard walls is inconsistent, the opinions of family members will often be inconsistent, resulting in differences and even quarrels, which will eventually lead to more and more disharmony in the whole family. Solemnly declare: this answer is for reference only, please don't be blindly superstitious.