What is "ten expensive"?

What is "ten expensive"?

The ten nobles of Fengshui refer to the ten auspicious shapes related to dragons, caves, sand, and water, which can give birth to noble places. The singing formula is: "One precious green dragon and double embrace; two precious dragons and tigers towering; three precious dragons and tigers towering; three precious dragons and tigers towering; three precious ones; four precious flags and drums are round and abundant; five precious inkstones; Pen Qinglong; nine expensive screens go horseback; ten expensive water mouths.

The double embrace of the blue dragon means that the main dragon is surrounded by dragon wings. The towering dragon and tiger refer to the majestic and mighty blue dragon and white tiger. Chang'e is beautiful, referring to the bright and beautiful main mountain. To be round and round refers to the roundness and plumpness of the surrounding mountains. The pen holder in front of the inkstone refers to the beautiful mountain of court cases, which rises like a pen holder and can be used by literati. Officially covered bell refers to the shape of a star peak, which is like a covered bell, which can be conferred on officials and nobles. Yuansheng Baihu refers to Youshan Taming Rou. The green dragon in the brush stroke refers to the towering show of Zuoshan. Screens go horses. It refers to the upright and tall Xuanwu Mountain behind it. The mouth is heavy. Refers to the closeness of the barriers.