Helsinki - Hongkong - Beijing - Helsinki with 72-Hour Visa?

Hello,

I am planning a business trip as following:
1) Helsinki - Hongkong ( staying in HK for 3 days first )
2) Hongkong - Beijing (staying in Beijing roughly 60 hours)
3) Beijing - Helsinki (returning home)

Can I use the 72-Hour Visa Free Transit policy?
Many thanks.