Proper nouns need to be capitalized when they appear as common nouns in Russian, while Spring Festival belongs to proper nouns and needs to be capitalized.

Russian capital:

1. If these words are at the beginning of a sentence, they must be capitalized.

2. If it appears in a sentence, there is no need to capitalize it.

3. If these common nouns appear as proper nouns, they need to be capitalized, and double quotes are needed if necessary.