Cut the eggplant into obliques, sprinkle with salt, and set aside for 10 minutes.
In a wok over medium-high heat, sweat the ginger and garlic in the vegetable oil until fragrant, about 10 seconds. Add the chili bean paste and continue sweating.
Add the eggplant and peppers and stir-fry over moderate heat until fork-tender, 3 to 5 minutes.