As I sit here typing away in the middle of the night from the airport  pretending I don't have jet lag, here are some observations from a breathless 24 hours running a media roadshow in Hong Kong:

1. Remember to pay for your cabs - in Hong Kong they don't seem to have Uber, I can't tell you how many times I walked out of a cab without paying! Old (or is it new?) habits die hard...

2. There seem to be even less Chinese people in Hong Kong than there are British people in London. This really is an international city par excellence.

3. Don't confuse the Mainland Chinese media with Hong Kong media - the big international media organisations based in Hong Kong can be handled from abroad (that's why I am here), but Chinese Mainland media needs the local touch from Beijing.

4. Hong Kong is a great place to do a media roadshow, everything is so close and the city runs like clockwork. I was able to see the Financial Times, Bloomberg, Wall Street Journal and South China Morning Post, all before lunch.

5. There really is only one word, or I suppose phrase, that you need to know when doing PR, or indeed any business, in China - WeChat! If you don't know what I am talking about then you can forget China. Think LinkedIn, Facebook, Whatsapp, Instagram, Twitter, email, telephone, SMS and Flipboard all rolled into one. The Chinese love it and once you use it you won't look back.