Once i was walking down the street,  I saw a merchant who was a deaf mute.

She was selling a Chinese stuffed pancake and nobody really bought it as the summer weather was too hot for that particular food.

She looked very bored and hot under the weather but soon she took out her cell phone and preseed the buttons as if she was going to

make a phone call. My curiousness came up and I was wondering how she was going to talk over the phone as she was a deaf mute.

But to my surprise, she posed some actions through the screen instead of talking on the mouth wholes. It was nothing but a sign language that

she was doing over the phone where you can call people through the screen and you can see each other. So people like her, who can not listen and talk

at same time, this function is very useful and effective ones for them.  I was abstracted for a moment to find out and actually believe what i was seeing

at that moment of time.  I also have that same function on my mobile phone, but I never thought it was a big deal or even thought it was kind of

unnecessary function  to included on the phone.  But as i witnessed that sight, all my immature and silly thoughts have washed away. I always have

thought mobile phones are just some kind of accessary for people to show off . But now, I think  it is the most incredible invention that human being

have ever invented  in this world of living.