Which episode of The Legend of Liulichang is where the shopkeeper Liu bought Tian Huang?

The first episode.

The Legend of Liulichang is a TV series directed by Feng and starring Zhang Guoli.

The play tells the story of three men who have nothing to do with antiques, namely Yuan Yushan, a simple and honest man in Loyalty and Honesty, Jin Baoyuan, a good friend of the declining prince, and Cui Heyou, a combative teenager, who mistakenly entered Liulichang and translated a legendary story of marriage in troubled times.