Of course it does help a lot specially when you watch with subtitles. I have been watching English movies for 3 years. I couldn’t even read very well. But watching English movies will subtitles was so helpful now I can read and speak I used to read subtitles very fast and it took some time but believe me if anyone who wants to learn Chinese language he or she should watch Chinese drama or movies start with basic and try to improve every day and believe me you can learn it it’s a beautiful language