Observing day" is Trut Chin day or New's Year's Day. On this day everybody will do and say only auspicious things. During the festival, the Thais of Chinese descent will wear red clothes which are believed to bring blessing. There is also a prohibition against sweeping the floor for they fear that the luck and blessing will be swept away.
This "observing day" is sometimes called "going out" day. It derived from the fact that when the children and employees get angpao, they will go out to have fun.
In addition, during the festival, the Chinese have a custom to take four oranges with them when visiting their senior relatives. The orange in the Chinese language is called "kik" meaning good luck. So, an exchange of oranges means an exchange of blessing.
Normally, the host will keep two out of the four oranges wrapped in a large handkerchief and replace them with two new oranges from the host. Some families may prepare "khanom-ii" to serve their guests as well. Khanom-ii are sweetened Chinese rice dumplings whose colour is pink. The easy-to-chew characteristic of the dessert signifies good fortune and the convenience in doing everything.