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Because the first post is called "First Floor", and the second post (that is, the first reply) is called "Second Floor", or SF for short, and then SF reads and reads SoFa, and just like that, the "sofa" appears.
The netizen who replied first was on the first floor and was called "sitting on the sofa" The netizen who replied second was on the second floor and was called "sitting on the bench" The netizen who replied third was on the third floor and was called "sitting on the floor" Grabbed the first place, like sitting on the sofa, and got the bench if you couldn't grab the first.
The first person to follow the post is called "sitting on the couch". >>>More
The sofa is the first person to comment on the log, which is true, but I didn't say why, because the first person is fast, so others say so fast, and some are referred to as so fa for a long time, so it's called a sofa. >>>More
The first person to reply is generally called the first person, and when he talks about it, he says it is a sofa.
The same is true of the head pit.
It's after the landlord's post.
The first one to reply. >>>More