The renovation began in March on auspicious day of the ecliptic.

March 1, March 10, March 15, March 19, March 22, March 26 and March 30 are all very suitable for decoration.

The auspicious day of the zodiac is a unique word in China's traditional calendar "Yellow Calendar", which refers to a day when everything is suitable. In the Gregorian calendar, "Qinglong, Tiande, Yutang, Siming, Tang Ming and Jingui" in the Twelve Gods are called the Six Zodiac Days, and "except, danger, determination, persistence, success and opening" in the Twelve Zodiac Days are also called the Little Zodiac Days. When the six gods of the zodiac are on duty, everything is suitable and does not avoid evil spirits, that is, "the zodiac is auspicious."

According to the law of the influence of celestial bodies and astrology on human beings, the ancients formulated the ecliptic underworld day, which provided some references and choices for China people to choose a day to avoid disaster. This auspicious culture has been deeply rooted in the thoughts of China people since ancient times, and has been influencing the lives of China people, and has formed a custom.