Crawling at 9 month

I am noticing that my blossoming baby is learning different ways to express herself emotionally. She's also becoming more social day by day. A few of her favorite new tricks: clapping, especially when pleased or delighted; waving bye-bye; kue tok bi (her favourite actions), as if to indicate what she wants or when she sees something new and interesting; shrieking loudly to attract my attention; laughing at silly sounds and expressions; crying in a specific tone to convey a particular "request."

She also can understand if i raise my voice when she wants to touch something. Well, she actually touches everything, and if we grab the things from her hands, she will cry out loud as if she is bullied or falls down.

She crawls very fast..........from the room to the living room, and nobody knows that she has waken up :0