摸摸小手十指相扣拉拉大手十指相扣
[mō mō xiăo shŏu shí zhĭ xiāng kòu lā lā dà shŏu shí zhĭ xiāng kòu]
It means 'holding hands, whether little hands or bigger ones'. A romantic expression signifying affection and closeness through the gesture of interlocking fingers when hands touch.