Thirty-fourth Secret Song (歌訣三十四) from the The Thirty-Six Songs of Baguazhang (八卦掌三十六歌) Trigésima Quarta Canção Secreta (歌訣三十四) das Trinta e Seis Canções do Bāguàzhăng (八卦掌三十六歌)

歌訣三十四

伸手不見前掌伸，
又無油松照彼身，
收縮眼皮努睛看，
底盤掌使顯神奇。

"When extending the hand one cannot see the front palm stretching,
And there is no light to illuminate the opponent’s body,
Contract the eyelids to exert the eyeballs to see,
The palm at the bottom portion enables the miracle."

Based on the translations by Yang Jwing Ming (楊俊敏) and Liang Shou You (梁守渝) in "Baguazhang - Theory and Applications" (峨嵋八卦掌) and by Frank Allen and Tina Chunna Zhang in "The Whirling Circles of Ba Gua Zhang"