7 1 1 convenience store Chezai noodle sauce package is Shoutao brand XO sauce. 7 1 1 convenience store chezai noodle sauce package is a Shoutao brand XO sauce purchased in bulk from the Internet. The brand of 7 1 1 convenience store was originally founded by American Southern Company in 1927 in Texas, USA, so as to advertise that its business hours are from 7 am to evening1/kloc.