CREATE TABLE table_20574 ("Date  ( CE ) " CLOB, "Text" CLOB, "Simplified characters" CLOB, "Traditional characters" CLOB, "Pinyin" CLOB, "Wade-Giles" CLOB, "Literal meaning" CLOB)

Name the pinyin for 657 date
SELECT "Pinyin" FROM table_20574 WHERE "Date (CE)" = '657'
SELECT "Pinyin" FROM "table_20574" WHERE "Date (CE)" = '657'