You don't need a visa to Hong Kong because passport holders of Denmark can visit Hong Kong for up to 90 days without a visa. But you need a tourist visa to Mainland China, please submit the documents to visa office of Chinese Embassy in Denmark during its office hours:
1. Fully completed Visa Application Form in Chinese or English, attached with one of the applicant's recent passport color photograph
2. Original passport with validity more than six months and minimum 1 blank visa pages
3. hotel reservation, two way flight tickets