What is the Hanzi for píngfáng qū?
CREATE TABLE "administrative_divisions" (
  "name" text,
  "hanzi" text,
  "hanyu_pinyin" text,
  "population_2010_11_01" text,
  "area_km" text,
  "density_km" text
);
SELECT "hanzi" FROM "administrative_divisions" WHERE "hanyu_pinyin"='píngfáng qū';