The Application of Poetry (Chinese)

There was a math problem last night, and I racked my brains and couldn't figure it out. Just when I was (at the end of my rope), my father came over, and after his guidance, I was suddenly enlightened. It really is (another village).

Grandpa's seventieth birthday, relatives and friends came to congratulate him. Everyone wishes grandpa "happiness as the East China Sea and longevity as the South Mountain". But grandpa sighed, "to see the sun, for all his glory, buried by the coming night". I quickly stopped grandpa's words: "Frost leaves are red in February flowers". Grandpa, your bones are stronger than those of young people. "Grandpa smiled.

(copy the flash of my answer ~! -c-)