The use of ROTAN on Wan Qi

Yap I had to resort to the use of rotan on Wan Qi as Xihong and I feel that we really need to discipline her or she will become a spolit and naughty girl.
These days she always like to beat her auntie( our maid) and Xihong too. Occasionally, she also beat me if she cant get her way. Jus that she will apologise immediately and sayang me. But for the rest, she will beat and insist on not saying sorry which made us really unhappy so we had to use rotan on her.
Plus, nowadays she always like to ignore your questions or simply say umm. For eg when we ask if she still want more rice, she will just continue to do her stuff or simply say um as though she were the big boss. And after telling her to say a proper sentence she will continue to say um um um which made us very angry. So we threatened to use the rotan.
Whenever we took out the rotan, she will respond in full sentence immediately. After that she will recite DI ZI GUI where it says that children must quickly respond to parents when they are being called and bla bla and says that she must respond quickly like what is stated in DI ZI GUI. So that shows that she understand it very well, therefore we thought we really need to discipline or she will climb up to our heads as she grow older.

Somehow it sort of works, now whenever we ask her a question, if there is a delay, we will ask her why didnt she respond she will quickly respond in full sentence. And after that she will speak to herself that she must respond immediately.
Sometimes, my little Wan Qi can really be such a chicky monster. But on the other hand, she never fails to melt my heart. Every day she will suddenly say I love you mama at different parts of the day and give me a kiss. :) So actually when we really need to use the cane its always heartache and lots of heartaches. But Xihong and I always tell ourselves we cannot XIN LUAN or she will be a monster in school next time.