小双大双小单大单什么意思

简介：Xiao Xiaobai, who was sitting quietly on the chair with his eyes closed, focused on his dantian. His consciousness was integrated with the inner energy in his dantian. He tried hard to control the inner energy to condense into a stream, compress it into a thin line, and then control the inner energy. The line was carefully and slowly drawn in the Dantian space.