Xiao Hong, Xiao Lan and Xiao Hui live in Fengtai District, Tongzhou District and Chaoyang District respectively. Xiao Hong is not as old as her sister in Tongzhou. Xiao Hui is younger than her sister in Chaoyang District, while her sister in Tongzhou is older than Xiao Lan
ters according to their age?
Xiao Hong, Xiao Hui, Xiao Lan