鎖 - chain, irons, connection

economic blockade; embargo

closing; closure

national isolation; closing the country (to foreigners)

blockade; lockdown; sealing off (an area)

chain; chains

chain; series; connection

to shut; to close; to lock; to fasten

chain of yarn

closure of ports; excluding foreign ships from ports

golden chain

chain mail (armor, armour)

imperforate anus; anal atresia; aproctia