'Zài tiān yuàn zuò bǐyì niǎo, zài dì yuàn wéi liánlǐ zhī' shì zuì jīngdiǎn de àiqíng shìyán.
'In heaven we wish to be paired-wing birds; on earth, branches intertwined' is the most classic vow of love.
Tāmen de hūnlǐ yǐnyòng 'zài dì yuàn wéi liánlǐ zhī', zhēnqíng liúlù.
Their wedding quoted 'on earth, branches intertwined' — genuine feeling on display.