Tai Sui is also known as the Great Duke Jupiter.  But it does not represent the actual planet Jupiter.  Tai Sui is an intangible star which moves directly opposite of the planet Jupiter.  When translated from Chinese, the Tai Sui is known as the Yearly God.  There is a total of 60 Tai Sui taking turns to fulfill their task on earth each year.

Each year, there will be a new Yearly God on duty, looking after all matters on earth.  His appointment would commence on the 1^st solar term – li chun.  And the next would take over the baton on the following li chun.

Each year there will be some zodiac with opposing forces with the Tai Sui.  It can be determined base on the earthly branch of the pillar of destiny.  It can further be classified under offend, clash and punishment with the Tai Sui.

This Year of Dragon in 2012, the Tai Sui is called 彭Peng-2 泰Tai-4.

In the Taoist practice, praying to the Tai Sui at the beginning of the Lunar Year seeking for protection and peace would deflect the negative impact for those who has offend, clash or punishment formation with the Tai Sui.

For the year of Dragon 2012, praying to Tai Sui is during the first 15 days of the Lunar New Year.  The most ideal time for prayer is on 4 Feb 2012 which is the first solar term knwon as Li Chun.

In the Year of Dragon 2012, those born in the year of Dragon is in a offend formation with the Tai Sui.  And for those born in the Year of Dog is considered in a clash formation with the Tai Sui.  Lastly, for those born in the Year of Ox and Goat is in the punishment formation with the Great Duke Jupiter.

If one do not fall under the above category, the person’s pillar of destiny (ba zi) might still have clash, offend or punishment formation with the Tai Sui.

Part of the theory is also used in Feng Shui. In fact it is an important aspect of concern.  It is associated to the orientation of a premise determined using the Chinese Fengshui Compass known as Luo Pan marked with the 24 mountains.  The position of the Tai Sui changes every year.  The location where the Tai Sui resides should best be kept quiet with no disturbance.  Activities like renovation, ground breaking, earth digging, repairing and nailing on this area must be avoided till the following year.  If the Tai Sui is disturbed, misfortune would befall on the residence such as injuries, financial losses, business failure or sudden illnesses.  The impact varies according t the pillar of destiny.

In the year of Dragon, the Tai Sui is located at 112.5 to 127.5 degree of the Southeast known as the Mountain of Chen.  If the main entrance of a premise is located at this specific degree, slamming the door while opening and closing is also considered as disturbing the Tai Sui.