It took Lin Cai a long time to get to grips with her business offering domestic services in Kumming, Yunnan province.

"Retaining employees was a big challenge for me. I didn't know how to do it. I tried increasing salaries but staff still drifted away after a short time," she said.

"Early on the number of employees was small and it didn't take up too much time managing the company but as business expanded many problems emerged," she added.