Today, 67 years ago, on February 10, 1958 (Lunar Calendar, December 22, 1957), Mao Zedong first proposed the ¡°New Population Theory¡±.On February 10, 1958, the People¡¯s Daily published his first speech at the Fourth Session of the First National People¡¯s Congress ¨C ¡°Planned Families and Cultural Technologies Downtown.¡±