It’s quite far, Songgang is close to Dongguan, and Henggang is on the Longgang side, but you can get there by taking bus No. 863. The following are the bus stops, I hope it can help you

Route 863:

Fuyong Bus Station - the bottom of Fuyong Bridge - Fenghuang Road Intersection - Fenghuang Industrial Zone - Shajing Electronic City - Shangnan Hotel - Shajing Central Passenger Terminal - Xinqiao Industrial Zone - Tantou - Dongfang Road Intersection - Song Gang Bus Station - Matian Road Intersection - Baotian Hospital - Heshui Port - Sanhe Department Store - Gongming Bus Station - Baomingcheng Hotel - Huangjiang Road Intersection - Jiangshi Road Intersection - Dongkeng Road Intersection - Tangwei - Tianliao Road Intersection - Tianliao Oil Station - Changzhen - Yulu Village - Shiyan Lake - Jingbei Village - Shiyan Bus Station - Wanlian Shopping Mall - Shiyan Central Police Station - Guantian Village - Bao Fuel Station - Shuitian Neighborhood Committee - Shuitian - Shanghenglang - Tongfufu Road Intersection - Tanluo Village - Shiguan Industrial Zone - Longhua Village - Taoyuan New Village - Longhua Theater - Longsheng Village - Jiantai Tire Factory - Yong'an Nancheng - Renmin Road Intersection - Wanzhong City - Shangyousong - Shuidou New Village - Lijincheng Industrial Park - Jiudinghuang Hotel - Bantian Guohikang - Bantian Intersection - Tian'an Garden - Baoli Industrial Zone - Gangtou Intersection - Shangxue Science and Technology City - Xiufeng Intersection - Lihu Garden - Shangshui Path - Xiashui Path - Buji No. 1 Village - Buji Hospital - Buji Xinyijia - Luogang Interchange - Kapok Bay - Buji Subdistrict Office - Dafen Walmart - Kangdaer Garden - Kaisa Guifang Garden - Zhongcheng Kangqiao Garden - Danzhutou Interchange - Shenkeng Community - Liuyue Community - City Center Garden - Henggang Subdistrict Office - Paibang Community - Henggang Hotel - 189 Industrial Zone - Baoan Community - Yinhai Industrial City - Crystal City - He'ao - Ailian Intersection - Nanlian Community - Nanyue Intersection - Longgang Subdistrict Office - Longgang Long-distance Bus Station - Wuzhou Style - Longgang Tianhong Shopping Mall - Longdong Bus Station - Longdong Community - Xindakeng Market - Tongle Toll Station - Tongle Furniture City - Tongle Community - Fuzhidao Furniture - Baolong Intersection - Gaosi Special Industrial Zone - Pingshan Bus Station - Baoshan Police Station - Pingshan Guohikang - Pingshan Oil Station - Pingshan Police Station - Customs Intersection