Today is 070707 in lunar calendar, the legend said it has 7 pretty fairies would come down and frolicking on the river, so that people like to collect river water on this day. The river water believes can help to cure some mild sickness and it is good for skin allergy. The another legend is talked about a guy (altair) only can meet his wife (vega) on this day (牛郎织女). In fact, the vega is one of the 7 pretty fairies and deemed that she's the most prettiest that married to altair. I love this legend when i was young, but now i have almost forgotten the details of this legend, what i can remember now just a short snippet....if you want to know more about this legend, do check from the net!