CREATE TABLE table_20719 ("English Name" TEXT, "Simplified" TEXT, "Traditional" TEXT, "Pinyin" TEXT, "Area" TEXT, "Population" FLOAT, "Density" TEXT)

Name the number of pinyin where simplified is
SELECT COUNT("Pinyin") FROM table_20719 WHERE "Simplified" = '河西区'
SELECT COUNT("Pinyin") FROM "table_20719" WHERE "Simplified" = '河西区'