OLED does not display when writing firmware for the first time

[zou-hong-run]

This code was invalid the first time it was run

from machine import Pin, SPI
import sh1106

spi = SPI(1, baudrate=1000000,sck=Pin(14),mosi=Pin(13))
display = sh1106.SH1106_SPI(128, 64, spi, Pin(5), Pin(2), Pin(4),rotate= 0, delay=0)
display.reset()
display.flip(True)
display.sleep(False)
display.fill(0)
display.text('hello world', 0,0, 1)
display.rect(0, 0, 50, 50, 1)
display.show()

print("testing")

This code is effective when OLED suddenly lights up,
It's very strange that I suddenly get better and can use it, but it won't show up when I write the program