For ordinary passenger trains, the window seats in hard-seat carriages are as follows:

If it is a coach car with a seating capacity of 1 12 (or 122), it is 00 1 005, 1 12 (or 122) and

If the coach is reserved for 1 16, the seats at the end of 00 1, 1 16, 2, 3, 7 and 8 are all by the window (except 002).

If it is a non-train coach with a capacity of 1 18 (or 128), the seats ending in 0, 4, 5 and 9 are all by the window.