守着少年的城护着姑娘的心
[shŏu zhe shăo nián de chéng hù zhe gū niáng de xīn]
Which means, 'Guard the city of the young man and protect the heart of the girl'. This evokes imagery of protective loyalty and devotion; someone committed to shielding others from harm, whether it's defending what matters most to them metaphorically or physically.