人心太拥挤人群难用你
[rén xīn tài yōng jĭ rén qún nán yòng nĭ]
'Renxin Tai Yanji Renqun Nan Yong Ni', can translate as 'The heart is too crowded, it is difficult to use you in a crowd'. This suggests feeling isolated even in a crowd, unable to open up or utilize your presence.