Happy Birthday

When I hear (or try to sing) Happy Birthday to You in Mandarin:

zhù nǐ shēng rì kuài lè
zhù nǐ shēng rì kuài lè
zhù nǐ shēng rì kuài lè
zhù nǐ yǒngyuǎn kuài lè

I happily remember Lauge´s fifth birthday: