How many Chinese restaurants are there on 1st st, Livermore?
Chinese restaurant refers to food_type = 'chinese'; 1st st refers to street_name = '1st st'; Livermore refers to city = 'livermore'
SELECT COUNT(T1.id_restaurant) FROM generalinfo AS T1 INNER JOIN location AS T2 ON T1.id_restaurant = T2.id_restaurant WHERE T1.city = 'livermore' AND T1.food_type = 'chinese' AND T2.street_name = '1st st'