1. chop the pork into minced meat 2. add salt, soy sauce, pepper, oyster sauce, sesame oil, cornstarch marinade 3. start a frying pan 4. add the minced meat 5. fry until slightly browned 6. take it out 7. add the tofu (wiped with salt) and fry it slightly, not too old 8. add dark soy sauce 9. stir fry over high heat 10. add water 11. add the minced meat 12. bring to boil the water 13. cover and boil for 5 minutes 14. Test the flavor, add oyster sauce if it is not salty enough