Shandong went ahead in the just the 5th minute when Roda Antar scored but found themselves 2-1 down at the break as Geninho and Lu Bofei hit the target for Jiangsu.
China international Han Peng then scored a double for Shandong before Enik netted an equaliser with six minutes remaining giving both sides a share of the points.
Elsewhere in the CSL, Shanghai Shenhua moved to second with a 2-0 away win over Dalian Shide who remained in ninth.
Changsha Ginde stayed in the top six with a 1-0 win over fifth-placed Liaoning Hongyun, Hangzhou Lucheng notched their first win of the season with a narrow 1-0 victory at Chongqing Lifan, Changchun Yatai added more misery to the season of Shaanxi Chanba by winning 2-0 at home leaving Chanba at the foot of the table, Shenzhen Ruby dropped to third following a 1-1 draw with Henan Jianye as Nanchang Bayi and Teijin Teda had a 2-2 draw.
Fourth-placed Beijing Guoan have the chance to jump to the top when they host 12th placed Qingdao Jonoon later today.