Children should try not to bring cinnabar. Cinnabar itself is poisonous and can be highly toxic when exposed to heat. However, cinnabar has the effects of calming the mind, calming the mind, clearing away heat and detoxifying. It is very effective in treating convulsions in children and can also treat some cases of sore throat. If the child has trouble sleeping, it may be caused by calcium deficiency. Appropriate supplementation of some calcium is enough.