Soak dry bamboo shoots to soften, boil if fresh.
Heat oil, sauté garlic, dry red chilies, and ginger until aromatic.
Add cubed pork, cook till browned.
Add chili powder, salt, and stir well.
Add bamboo shoots, tomatoes, green chilies, and Sichuan pepper leaves.
Pour water, cover, and simmer until pork is tender (about 30-40 minutes).
Adjust seasoning and cook until gravy thickens.