CREATE TABLE table_name_47 (portfolio_attachment VARCHAR, age_at_appointment VARCHAR, chinese_name VARCHAR)

What is the portfolio attachment of the Undersecretary appointed at age 48 with a Chinese name of ?
SELECT portfolio_attachment FROM table_name_47 WHERE age_at_appointment = 48 AND chinese_name = "梁鳳儀"
SELECT "portfolio_attachment" FROM "table_name_47" WHERE "age_at_appointment" = 48 AND "chinese_name" = "梁鳳儀"