(located) at; (to be) in; to exist; in the middle of doing sth; (indicating an action in progress)[cedict]
古时候
gǔ shí houㄍㄨˇ ㄕˊ ㄏㄡ˙
in ancient times; in olden days[cedict]
正好
zhèng hǎoㄓㄥˋ ㄏㄠˇ
just (in time); just right; just enough; to happen to; to chance to; by chance; it just so happens that[cedict]
位於
wèi yúㄨㄟˋ ㄩˊ
to be located at; to be situated at; to lie[cedict]
河边
hé biānㄏㄜˊ ㄅㄧㄢ
river bank[cedict]
上
shàngㄕㄤˋ
on; on top; upon; first (of two parts); previous or last (week etc); upper; higher; above; previous; to climb; to go into; above; to go up; to attend (class or university); third tone of putonghua[cedict]