Writing and reading in ancient times were from right to left. Therefore, it has become a habit for modern people to read couplets from right to left, which is also in line with grammatical logic. However, if the horizontal comments of couplets are written in the modern order from left to right, then when reading couplets, you need to leave first and then right. In short, the reading of couplets depends on the specific situation, but it is usually read right first and then left.