For domestic long-distance calls in Guangzhou, 020, 020-, (020) and (020) are also written, ignoring the preceding 0, and 20, 20-, (20) and (20) are also written. For overseas calls, the international area code should be added: 0086, so overseas calls should be written as 0086-20 and 00866. Subordinate counties and cities sharing Guangzhou area code 020: Nansha, Liwan, Yuexiu, Haizhu, Tianhe, Luogang, Baiyun, Huangpu, Panyu, Huadu, Zengcheng and Conghua.