What is the fine-grained topic of the following text: There has also been significant growth in the number of Chinese expats and students living in the UK, together with the increasing spend of Chinese tourists (average spend per transaction for Chinese shoppers was £922 in 2017, a 23.5 per cent increase from 2016 where average spend per transaction was £7462) when visiting the UK. Only return the topic.
Increasing Chinese presence and spending in the UK