Not familiar with that kind of Chinglish. It might be a direct translation of a Mandarin phrase.
Cheer up in spirit. Go with grace.
full of energy (or vitality); vigorous
When a person is full of cheer (is cheered up), they have more energy. Looks like they have been given "more gas" or "oil" to brighten their day.
They may "come on" and cheer up.
Is this your meaning?