Introduction to The Road to Light: In 1920, he went to Soviet Russia as a special correspondent for investigation and interviews. During this period, he wrote two literary reports and two books, introducing the true feelings of the new Soviet Russia to the Chinese compatriots. It also records the evolution and leap of his thoughts. The granddaughter of the famous poet Tolstoy also asked Qu Qiubai to translate Tolstoy's novels, bringing Soviet Russian literature to China.