That's too much, depending on the occasion. It is not difficult to praise the motherland if it is unprofessional: the song of the Yangtze River, patriotic commemoration of martyrs: defending the Yellow River, it is not difficult to sing after two rounds, but it is very imposing when it is sung well. Welcome to the Olympic Games: One World, One Dream Folk Songs: It is beautiful in the silver moonlight, and there is nothing exotic: Ode to Joy (loudly) red river valley's graduation performance or something: riding singing wings (with a nice melody), the hard part of seeing off: half a moon climbs up, four chorus without accompaniment, smiling all the time when singing.