import pygame as pg, sys

pg.init()
screen = pg.display.set_mode((400,500))
Clock = pg.time.Clock()
test_surface = pg.Surface((100,200))
test_surface.fill((0,0,255))
test_rect = pg.Rect(100,200,100,100)
while True: 
    for event in pg.event.get():
        if event.type ==pg.QUIT:
            pg.quit()
            sys.exit()
    screen.fill((175,215,70))
    pg.draw.rect(screen,pg.Color('red'), test_rect)
    screen.blit(test_surface,(200,250))
    pg.display.update()
    Clock.tick(60)