Chinese garbled after Oracle data is imported into new library

The reason that Oracle data is imported into the new library is garbled in Chinese: the inconsistent character set of the old Library and the new library is caused.
1, query the value of the character set
Select Parameter,value from nls_database_parameters where parameter= ' nls_characterset ';
2. Change Character Set
Sql> SHUTDOWN IMMEDIATE;
Sql> STARTUP MOUNT;
sql> ALTER SESSION SET sql_trace=true;
sql> ALTER SYSTEM ENABLE RESTRICTED SESSION;
sql> ALTER SYSTEM SET job_queue_processes=0;
sql> ALTER SYSTEM SET aq_tm_processes=0;
sql> ALTER DATABASE OPEN;
sql> ALTER DATABASE CHARACTER SET ZHS16GBK;
Sql> ALTER DATABASE character set Internal_use ZHS16GBK;
Sql> SHUTDOWN IMMEDIATE;
Sql> STARTUP;
Sql> Execute sys.dbms_metadata_util.load_stylesheets;

Chinese garbled after Oracle data is imported into new library