gǔ / rén / cháng / cháng / bó / bì / ér / gē / yǐ / biǎo / dá / xīn / zhōng / de / háo / qíng古人常常搏髀而歌,以表达心中的豪情。In ancient times, people often slapped their thighs and sang to express their heroic spirit.