他是光可我触摸不到
[tā shì guāng kĕ wŏ chù mō bù dào]
'He is light, but I can't reach it.' It implies unattainable longing or admiration, suggesting that even if there's a person who shines brightly and attracts much attention or brings enlightenment to you (as in guidance, inspiration, etc.), you find it impossible to come close to them either emotionally, spiritually, physically or because the gap of social class/position between you two, creating an eternal distance.