What does Dr Needham of Britain think of China's traditional science?

Dr. Needham of Britain said: "As for the Far East civilization, especially the oldest and most important Chinese civilization, its contribution to science, scientific thinking and technology is still obscure until today. But in ancient China, it has developed from astronomy, calendar, physics, chemistry, mathematics, geography, biology, architecture, ceramics, metallurgy, medicine and agriculture to "four great inventions". This has greatly enriched the treasure house of human culture and promoted the process of world civilization. "