Visa free to China from Netherlands max 15 days

I noticed that Dutch nationals can travel visa free to China for max 15 days stay. I intend to go to Shenzhen from Hong Kong and stay in Shenzhen but travel regularly to Hong Kong during this period for a maximum of 5 days. Hotels in Shenzhen are much cheaper than HK hotels. Is the visa free still eligible as I would not have exceeded the 15 days limit.