In this experiment, PM2.5 and carbon monoxide levels in a room are tested before and after the lighting of a cigarette.

How serious is the pollution caused from smoking two cigarettes in a row?

Cigarette smoke and car exhaust go head to head in carbon monoxide and air pollution level comparisons.

A car is pulled into a closed garage. What will be the effects of air pollution?

What are the PM2.5 and carbon monoxide levels for a cigarette smoked inside a car?

Is flour combustible?

An experiment to prove or disprove the combustibility of flour is upgraded to include more contact between flour and air.

An upgraded version of the experiment to prove or disprove the combustibility of flour quickly turns into a dangerous situation.

The effects of powder explosions can be devastating.

Hunan University's Formula SAE racing team is the first such university team in the country. It is a long process to build the race car for the competition and, the team's leader will tell you how it's done.

It takes a lot of effort to build a car, and although the team faces many hardships, they will overcome them in the end.

Having spent an entire year working on it, the team members treat the car as their baby.

A great deal of preparation goes into every car and although it might seem simply "cool" to the observer, it actually takes a ton of time and effort.

This video is a demonstration of acupoint selection.

The host has some fun with acupuncture and the guest's needles are eventually removed.

Acupuncturist Mr. He only needs to insert a needle into one spot to treat a case of knee joint pain. Where will it be?

This video explains the origin of the term, "Windy Mansion."

This video demonstrates acupuncture insertion into the "Windy Mansion" acupoint.

Just like many things, acupuncture is about quality, not quantity.

This video introduces another acupoint, the "Chungwan," further supporting the principle that "All it takes is one needle."

Mastering the use of the acupoints takes decades of practice.

Do we listen to the numbers? Or our feelings?

Placing the health standards of younger people on the elderly is not only unnecessary. It's unrealistic and unhealthy.

What's the difference between "Yang", "Ji" and "Bing?