Traveling from Finland to Shanghai with Russian and Finnish passprts

Dear recipient,

I am planning to travel to Shanghai in July from Helsinki, Finland. I have both Finnish and Russian passports, but planning to make a visa by using Russian passport. My travel duration is going to be 2 maximum 3 weeks. Is it okay to travel to China with Russian passport, where I will have visa, even though I will travel from Finland. I'm not sure if this question should be asked here or from local police or airport instead. But I hope you can help with this matter, s I can proceed with documents soon

Kind Regards,
Victoria