CREATE TABLE table_203_646 (id DECIMAL, "year" DECIMAL, "competition" TEXT, "venue" TEXT, "position" TEXT, "notes" TEXT)

what was the first venue for the asian games ?
SELECT "venue" FROM table_203_646 WHERE "competition" = 'asian games' ORDER BY "year" LIMIT 1
SELECT "venue" FROM "table_203_646" WHERE "competition" = 'asian games' ORDER BY "year" NULLS FIRST LIMIT 1