I arrive to Beijing in the afternoon.

不应该用to,arrive后只跟at和in,
在大地方arrive后用in,比如说到北京``
在小地方arrive后用at,比如说到车站了`

to改in
时态不对要不就
i will arrive in BJ in the afternoon.
要不就改成
i arrived in BJ in the afternoon.

此句子没有时态也不对

I am arriving in BJ in the afternoon

in