HomeUPSCWhich book helped Mao Zedong to make the idea that, change is the only constant phenomenon in this universe? Which book helped Mao Zedong to make the idea that, change is the only constant phenomenon in this universe?By Admin / October 4, 2025 A. ‘on practice’ B. ‘book of changes’ C. on theory’ D. ‘thus capital’ ✅ The correct answer is option B.