To create emotional barriers or distance from others.
与他人建立情感上的隔阂或距离。 (yu ta ren jian li qing gan shang de ge he huo ju li)
"After the breakup, she put up walls and stopped trusting people."
"分手后，她筑起了心墙，不再信任他人。" (fen shou hou ta zhu qi le xin qiang bu zai xin ren ta ren)
