Chinese Evergreen

Question

Four leaves on my plant are turning Brown and working inwards

Answer 1

This is normally caused by a drastic change it the plants environment, in this case. Is is close to something that gets chilly, such as an open window at night? Maybe the humidity changed, drastically? Here is an article on their care, which will help you: https://www.gardeningknowhow.com/houseplants/chinese-evergreen/chinese-evergreen-plants.htm