沒想到！花了186元黑化房間，投影畫質提升203%↑↑↑ After DARKENING the room, the projection image quality improved by 203%

This is an episode of room transformation video, and this may be the cheapest and most immediate way to improve projection image quality. Disclaimer: For those with a living room at home, please be prepared for some scolding before you start the operation... Darkening material: Non-woven velvet fabric Friendly reminder: If you're planning to do this too, it's best to buy enough materials at once, as there can be differences in brightness between different batches.