How long you practice depends on your perseverance and foundation. After skillfully completing the Russian stance, you can naturally complete the handstand. You can practice handstand and slow handstand in the process of practicing Russian standing posture. In addition, it is more difficult than handstand and one-arm pull-ups, not a little. I spent 1 month on my handstand and about 6 months on my one-arm pull-ups. Now I can only stand low.