BEIJING - A total of 30 e-books on Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era were launched on 14 leading online platforms Monday.

They aim to help people advance their study of the ongoing Party education campaign themed "staying true to our founding mission."

The books, published by 11 publishing houses including the People's Publishing House and the Central Party Literature Press, are available at the online platforms such as Xuexi.cn website and app, the online shop for Xinhua Bookstore, and iReader.

They included works written by Xi, general secretary of the Communist Party of China Central Committee, offprints of his speeches, as well as excerpts and other publications compiled by authorities covering areas including the economy, politics, culture, social affairs, Party governance and diplomacy.