Chinese Reading World https://chinesereadingworld.sites.uiowa.edu/ This is the updated version of 2008
The Chinese Reading World consists of 900 reading lessons, 90 achievement tests, and 15 proficiency tests with many other features. This web-based extensive reading program targets three groups: (a) students who are taking college Chinese courses at beginning, intermediate, or advanced levels; (b) high school students who are learning Chinese and wish to improve their reading skills or to practice reading for College Board Advanced Placement (AP) Chinese exams; and (c) individuals who work in government agencies or private organizations wish to learn to read and improve their reading skills in a systematic way. This site is free to all users.