Q.My Chinese Lantern plant
I would like to find out why my Chinese Lantern has a white creamy substance on the stems. Could you tell me what this is and how do I get rid of this?

This is likely due to an infestation of Mealybug.
You can treat the plant with Neem Oil.
Here are some links with more information.
https://www.gardeningknowhow.com/plant-problems/pests/insects/mealybugs-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm