It means proceeding from present realities and making full use of all favourable conditions to attain the objective of the four modernizations as defined by Comrade Mao Zedong and proclaimed by Comrade Zhou Enlai.

• 就是从现在的实际出发，充分利用各种有利条件，实现毛泽东同志提出、周恩来同志宣布的四个现代化的目标。