The indoor temperature of decoration should be kept between 18-20℃. This temperature range is to ensure that decorative materials such as cream or chocolate will not soften or dissolve prematurely. Too high temperature will lead to the loss of shape and stability of decorative materials, which will affect the appearance and taste of cakes or cakes. If the temperature is too low, the decorative materials will be difficult to use or the solidification time will be too long. Keeping the temperature between 18-20℃ is to ensure the best performance of decorative effect.