For the purpose of begging for blessing and getting away from evil, oil-light, white rice, 7-stars sword, mirror, a pair of scales, parasol, ruler, scissors etc. are placed inside round bowl.

Bowl Lantern symbolizes the lasting brightness as well as immortal life. A lot of variety of bowl lanterns are set and venerated by worshippers who are usually in crowds and willing to pay the lantern fee, in order to bless for safety. All the collecting money is used as the funds of putu and other activities.

The installation of bowl lantern is divided into two kinds: public and private. The large one is settled for all of the local citizens, the others are for surnames, tribe groups, families. Keelung area merely bases on surnames for inviting bowl lantern.

The white rice, 7-stars sword and scissors are used to keep away from evil. The ruler, scale represent the meanings of balance between importance and seriousness, the measurement of the good and evil. The mirror can show up the monsters. The oil-light signifies brightness, breeding more tild children and prosperity.

According to the folk belief, the fire in the lantern should be lightened forever, if it goes off unexpectedly, then a bad luck would bring to those who own the lanterns.