A、
Qi is the fundamental substance constituting the universe.
B、
All phenomena were the results of the changes and movements of qi.
C、
Qi is the most essential substance that forms the human body and maintains our life.
D、
To judge whether a man was dead or not, people put a handful of soil by his nose.
喵查答案：
To judge whether a man was dead or not, people put a handful of soil by his nose.
