Because Yang Lin was Qin Qiong's father-killer, he killed Qin Qiong's father Qin Yi.
Qin Qiong's father, Qin Yi:
Nanchen, the son of Qin Xu, was guarding A?vagho?a Pass, with a tiger's head and a golden gun in his hand. Qin Jia's tile was famous all over the world. Later, Wang Yang and Bing Lin, his patron, sent Nanchen to defend A?vagho?a Pass. Eventually, because the traitor betrayed the country and surrendered, he led his troops into the city. Qin Yi resisted desperately, and the troops refused to save one. Extended information
Qin Qiong killed Yang Lin:
Yang Lin once again collected 162, imperial programs and personally escorted them. At that time, Cheng Yaojin and others gave Qin Qiong's mother a birthday present. Cheng Yaojin wanted to come out and rob the road because he didn't have a big gift. When he met Yang Lin and escorted Huang Gang, he came to intercept it, but his martial arts skills were not as good as Yang Lin's, and he was taken alive by Yang Lin. You Junda saw Cheng Yaojin caught in the back to fight against Yang Lin, but he was also caught by Yang Lin.
Yang Lin summoned all officials of Jinan Prefecture together with Qin Qiong, and beheaded Cheng Yaojin and others. Qin Qiong temporarily detained Cheng Yaojin and others on the grounds that Huang Gang had not been found.
Yang Lin didn't want to believe that Qin Qiong rebelled against Shandong, and went after Qin Qiong himself. Qin Qiong told Yang Lin that he was the son of Qin Yi and that he had a grudge against Yang Lin for killing his father. Although Yang Lin defeated Qin Qiong, he could not be arrested. Qin Qiong tricked Wei Wentong, the commander of Tongguan, into escaping. After Yang Lin arrived in Tongguan, he sent Wei Wentong to arrest Qin Qiong, but Wei Wentong failed and returned.
Reference: Baidu Encyclopedia-Yang Lin
Reference: Baidu Encyclopedia-Qin Qiong.