Episode 6 recap: Yang Cai Wei suspects Pan Yue as the murderer.

Yang Cai Wei saw her own body being preserved intact in a crystal ice coffin. While lamenting the death of Shang Guan Zhi, who died in her place, Yang Cai Wei skillfully took out the tools for an autopsy. However, after a thorough examination, no wounds were found except for a slight injury on the scalp. Yang Cai Wei then pulled out a silver needle from her brain.

Yang Cai Wei speculates that it was Pan Yue who killed her on their wedding night. Just as Pan Yue returns at this moment, Yang Cai Wei quickly hides everything. Pan Yue was waiting here to catch a hare but never expected to encounter her. Yang Cai Wei claims that she wants to help with the investigation, despite Pan Yue repeatedly emphasizing that her death was an accident. However, Yang Cai Wei believes that if it were an accident, she wouldn't have been wrongly accused. There must be something more to the story.

Yang Cai Wei doesn't reveal what she discovered to Pan Yue, but privately wonders what Pan Yue intends to do by meticulously preserving the body. The princess sends a message to communicate with Pan Yue, which further annoys Yang Cai Wei. Yang Cai Wei treats everyone to a meal, but secretly intends to gather clues about the case of the golden needle murder.

Yang Cai Wei learns about a gold shop and dresses up beautifully before going there. Upon waking up, Ajian finds a Lan Hua knot tied to his arm, just like the one Yang Cai Wei has. He immediately goes to find someone. While Yang Cai Wei searches for clues in the gold shop, Pan Yue quietly follows. Yang Cai Wei pretends to be selecting jewelry, and Pan Yue picks up an exquisite Hai Tang hairpin and helps Yang Cai Wei put it in her hair. This action frightens Yang Cai Wei, causing her to break out in a cold sweat.

Pan Yue knows that Yang Cai Wei came here to find clues about the golden hairpin, so she reluctantly brings out the evidence. Yang Cai Wei decides to search all the gold shops in Heyang and asks Pan Yue to wait at the restaurant.

Ajian found the waiter from the restaurant yesterday and asked who had brought him back. He learned that it was a young lady from the capital city.

Yang Cai Wei posted a lucrative reward notice, and soon a representative from a gold shop arrived with their finest products. Through this encounter, they learned about Liu Lang, the best goldsmith in Heyang, who coincidentally passed away last month. Pan Yue and Yang Cai Wei went to Liu Lang's home, where they found only an elderly woman with poor eyesight. Yang Cai Wei repaired the lamp left behind by Liu Lang and inquired about the circumstances of his death.

It turned out that Liu Lang died on the day before Pan Yue's wedding. The elderly woman said that Liu Lang had received a large sum of money but never returned after leaving the house. This was a highly suspicious incident. Yang Cai Wei and Pan Yue went to Liu Lang's grave, where the elderly woman seemed to harbor some hostility toward Pan Yue. Pan Yue went back to find a coroner, while Yang Cai Wei quietly comforted the grieving elderly woman. The woman whispered to her that the new client who visited Liu Lang was someone who had been to their house. Despite her poor eyesight, she could hear clearly, and the person's voice was identical to Pan Yue's voice.

Yang Cai Wei was shocked and immediately began digging up the grave to conduct an examination of the body. However, Pan Yue returned halfway through the process. Pan Yue noticed the fear in Yang Cai Wei's expression, so Yang Cai Wei decided to explain her suspicions directly—she suspected Pan Yue was the killer of Liu Lang's wife! Pan Yue, on the other hand, argued that if he were the killer, he would never have preserved the body. He had brought a coroner from the capital city, but unfortunately, the coroner had been poisoned upon arriving in Heyang.

When they dug up Liu Lang's grave and performed an autopsy, they found a large amount of silver inside the deceased's body, suggesting that he had been forced to swallow silver and died as a result. Before his death, Liu Lang left evidence pointing to the culprit—the chips from the Life and Death Gambling House. Ajian found Yang Cai Wei, but how could a young lady from the capital city be helping him? And why would she be wearing the same Lan Hua knot that only Yang Cai Wei knew how to tie?