Eek, I shall get training at once, Chul! 
I don't know Cantonese though... Will Japanese do??
I expect what'll actually happen then is M will show off the scratch on her side and declare "Mummy Scratch Watch!" in her loudest voice, like she has been doing to everyone else. 
She was writhing in my arms so much one time that her t-shirt ended up round her neck and my watch strap nicked her side.
Either that or she'll hold out her arm and tell the HV something along the lines of "Spider Arm! Spider Gone... Mummy Spider Arm!" as she's been obsessed ever since she met a spider in the bathroom and it crawled up her arm. I found a different (tiny...) spider to demonstrate that was ok, and ended up making her obsession worse...
Wow, all the nurseries are so different! They don't have a specific age here for the different rooms, it goes more on each child's readiness with confidence/abilities/etc.
M was in the baby's room from 9 months until about 18 months, when she was finally walking relatively confidently so not going to be trampled by toddlers - and by moving not going to trample the babies.
She's been in toddlers since then, where they've been waiting for her speech/understanding to reach the point where she'll be able to join in confidently with the tweenies room activities.
They've been making murmurings that she's nearly there, so I expect in the coming months she'll start doing some split days between toddlers and tweenies for certain activities in readiness to move completely. I'm not sure at present what the criteria is for moving up to the school-room.
M's 2 year appointment was right in the middle of the working day too, Woodlands. I phoned up though and they moved me to the first appointment in the day, which means I can take it as appointment time from work. :)
I'm finally starting to feel more human - M has slept perfectly overnight since we got home. Why couldn't she do that on holiday?? Grr!