A few months before the Sun-Joffe talks, also in the quiet, bookcase lined study at 29 Rue Moliere. Ching Ling had heard another history-making conversation-between Sun Yat-sen and the Chinese Communist Li Dazhao (1889-1927).
Li Dazhao—among Chinese intellectuals—was unusual. Among the students in Japan at the time of Sun Yat-sen's exile，he had moved perhaps the furthest ahead in politics, and soon after, under the impact of the Russian Revolution became one of China's first propagators of Marxism.
Though more than twenty years younger than Sun, Li quickly won his respect. Soong Ching Ling was to later recall that their conversation extended into a meal, hastily got together and for long afterwards.
Ching Ling, wanting to know more about Marxism, wrote to Li Dazhao in Beijing asking for a copy in English of Bukharin's Historical Materialism, which he favored as a text.
Under the support of Sun Yat-sen, Li Dazhao and others, including Mao Zedong, were on the new Central Committee of the Kuomingtang.
Soong Ching Ling later recalled:
“I asked Sun Yat-sen why it was necessary for the Communists to enter the Kuomintang.”
“He [Sun] replied, ’The Kuomintang is composed of the best and the worst people in China. The best are attracted by its ideals and objectives, while the worst join us because they think it is the stepping-stone to becoming officials. If we cannot get rid of these parasites, what good is the Kuomintang? ”