Xi made the remarks in meetings with Kim Jong-un, the top leader of the Democratic People's Republic of Korea, on Monday and Tuesday in the northeastern Chinese coastal city of Dalian.
Xi has stressed that the more achievements China makes, the more judicious officials should become, avoiding strategic and subversive mistakes.
Xi and Modi held an informal meeting in Wuhan, Hubei province in April-a meeting Xi said he hoped would begin a new chapter in bilateral ties.
Xi told Modi during their meeting that Beijing welcomes investment in China by Indian pharmaceutical and information technology companies.
Xi said that education is a major impetus for the development of a country and a key bond to promote exchanges between different peoples.
Xi calls for continuous effort to deepen reform
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Xi called for enhancing the aligning of the Belt and Road Initiative and the Eurasian Economic Union.
Xi, also Chinese president and chairman of the Central Military Commission, made the remarks at the second plenary session of the 19th Central Commission for Discipline Inspection (CCDI) of the CPC.
Xi called the plan the CPC's "strategic vision for developing socialism with Chinese characteristics in the new era."
Xi said he hoped non-Communist parties, the ACFIC and personages without party affiliations would unite in thought and action while supporting the CPC Central Committee decisions to deepen reform.