Prepare Ingredients - Cut beef across grain into ½-inch slices and season all over with salt. Make individual small bowls (or partition on a plate) for scallions, red onion, peppers, tomatoes, garlic and ginger, soy sauce and vinegar combined. Cook rice and French fries.
Cook Meat - Heat 2 tbsp oil in a wok or skillet over high heat until heavily smoking. Spread ⅓ of the meat slices across bottom so they are evenly spaced. Cook about 1 minute on 1 side to sear. Flip meat and cook 30 seconds more. Remove to a plate and let wok get hot again, adding a little oil if necessary. Repeat process 2 more times. Wipe wok clean with paper towels.
Cook Dish - Return wok to high heat and add 1 tbsp oil. Add onion in 2 batches and brown on 1 side for 30 seconds and then toss a few times and remove to bowl with cooked meat. Add 1 tbsp oil and then scallion. Cook 30 seconds without turning. Move to the side. Add peppers for 30 seconds and move to side with scallions. Add tomatoes and let the sear on 1 side for 30 seconds. Mix vegetables in pan together and add garlic and ginger. Cook until fragrant, about 15 seconds, then add soy sauce and vinegar and toss to combine. Return meat, juices, and onions to pan. Toss in cilantro and salt and pepper to taste. Turn off heat.
Serve - Toss fries in wok or serve separately. Spoon onto plates with a mound of rice and serve hot.