Your comment is off, baseless and hostile.
'Beijing' is the most common pronunciation of 'Northern Capital' in 'pu tung hua' or 'mandarin' Chinese spoken in the People's Republic of China. The spelling Beijing was adopted for use within China upon the approval of Hanyu Pinyin on February 11, 1958, during the Fifth Session of the 1st National People's Congress.
'Peking' or 'Puk Ing' is the Cantonese Chinese pronunciation of 'Northern Capital'.
Both names are valid in Chinese although 'Beijing' is more commonly used since there are more non-Cantonese speakers than there are Cantonese speakers in China.