Good advised.
Adding to that, I think a 100% commitment to the job is important especially if you are new because you may be spending a a lot of time with the photographer or learning from the seniors. In the past, I remember me and another 4-5 assistants would stay back and exchanged notes till 10 or 11pm on the day's shoot. Tired but fun indeed if you are desperate to learn.
A friend of mine went for an interview with this top photographer in sg and he was told by the photographer that he is looking for 'someone he could married and lived together with'.

For that I totally agree, to an assistant it might just be a sojourn, an academy to learn what they have never been taught in schools but to a photographer - it is business. They don't need someone who just carry stuffs - a donkey would be efficient.:bsmilie:
They need someone who knows their styles, pro-actives and learn fast to be an assistant. Not someone who will snatch away their clients in future but it happens all the time.:sticktong
In Thailand, I've seen the best and worked with the best crews.
I'm not sure about sg now but in Bkk, as long as the tripod is moved all assistants would be running like red ants. Their first thing is to make sure that the photographer is comfortable, if the photographer has to shoot from a high angle under the sun. It would be done in mere 2 mins with ladder, umbrella and shades all setup without speaking a word. Or if the photographer has to shoot from a low angle, crusions would be laid on the floor or boxes stand by waiting for the confirmed angle.
These are people who never even step into high school or wanted to be a photographer. They are just workers with the right attitudes or perhaps living to make ends meet but professional. I know one that drives a Toyota Wish - same as my client in Bkk.:dunno:
O.T.:
Anyway, things are in bigger scales in Bkk. A Studio could be a building of 2 storeys or 4 buildings of 4 storeys that I've seen. So, can one imagine the scales in China?
Just my 2 baht worth.