What is the core belief of Taoism? Is it Ying & Yang?

What is the core belief of Taoism? Is it Ying & Yang?

The core belief of Taoism is "the way" which is basically like the natural flow of life.

Wu Wei

Duality is an illusion.

If I could perceive the Tao, I could not comprehend it. If I could comprehend the Tao, I couldn't speak of it. If I could speak of it, you would not understand it.

Taoism is not a belief system.Perceiving the present without
the shadow of the past is the core of Taoism.

Taoism is not a belief system. Therefore there is no core belief. Unless you speak of the cheap & nasty version of Taoism prevalent in alto of China with a god for every occasion...

Taoism itself is a journey of self discovery.

Ying & Yang is one of the principles that run through the system, solely because of the dualistic human psyche. The very true measure of yin & yang is that one feels happy today, it follows that the opposite is on the way sometime when the peak of happiness is reached it will flip into its opposite.

You probably know that some Daoist belief was written by Lao-Zia in the famous Tao Te Ching. There is also an ancient scripture called "Daoist Canon". You'll need to find a high level Daoist master, who is difficult to come by, to help you to understand the text, There is an alternative, you learn about the Taoist belief from the on line Zhuan Falun Lecture.

For example, the Daoist symbol, Tai-Jo, is discussed in the Fifth Talk of the Lecture. The Daoist belief is summarized on page #8. Other Daoist practice is also mentioned throughout the Lecture.

Not relating to Buddhism nor Taoism, Falun Gong is a unique Buddha School, combining the Taoist and Buddhist practice. Falun Gong is based upon the universal principles of Truthfulness, Compassion, and Tolerance. Falun Gong consists of five sets of powerful exercises.

Can you kindly sign a petition to stop persecution of Falun Gong practitioners in China ahead of the Beijing Olympics, please ?
http://cipfg.org/en/news/731.html

Thanks.