Before the age of eighty, Mainland China’s diplomatic policy was in fluenced by Marxism-Leninism, then emerged “leaning to one side” “revolutionary diplomacy” “anti-hegemony diplomacy” etc. after the age of eighty, Mainland China practiced “reform and open-door policy” under the consequence of its which result in “economic diplomacy” and “national-interest diplomacy.” The problem is Mainland China is back to normalcy the western world is beginning to worry whether this would be “yellow-for-tune” of “yellow-peril.”