Judo technique - Ippon

Cho Min-Sun throwing for Ippon. This technique of Judo to me is like a daring technique of ramming the other opponent. Of course the word ramming is not correct to be accurate as it involves great accuracy and timing to get the opponent down using this technique. Noticed how Cho hooked on the leg of the other opponent and using her body weight to push the opponent down. There seems to be like no escape once this fast and strong technique is performed.