Add the area code 0969 in front of it and then dial 123 19 directly with your mobile phone.
123 19 is the urban construction service hotline, which is the national public service telephone for the construction industry determined by the Ministry of Construction and the Ministry of Information Industry. The service scope covers a variety of industries in seven related functional departments, including water supply, municipal administration, gas supply, drainage and flood control, real estate development and operation, landscaping, urban transportation, city appearance and sanitation, building materials industry management and urban management supervision.