《Citylink decision》Ep31:Episode 31
Di Yun decides to complete Ding Dian's first wish and to have Ding Dian and Ling ShuangHua buried together. He finds Ling ShuangHua's coffin captive with the Liancheng tactic, which was originally engraved with nails by Ling ShuangHua. Di Yun explored Miss Ling's burial ground, arousing Ling TuiSi's attention. Ling TuiSi asked Di Yun for Liancheng tactic, and Di Yun promised to give him the next day. The next day Liancheng tactic appeared on the south gate of the city wall, Di Yun found 10,000 father and son, in the battle, Wan ZhenShan sacrificed his son.