Further, because of Chen Ziming's use of terms, "old frame" and "new frame", coupled with the modern Chen family usage of "Old Frame" and "New Frame" to describe the forms taught in the Chen Village by Chen Zhaopei and Chen Zhaokui, respectively, this has become a further source of confusion for modern students, writers, and even some historical scholars. Even today, some people confuse Chen Zhaopei’s forms called Old Frame (Laojia) by his students with Chen Wangting’s system, and Chen Fake's routines taught by his son, Chen Zhaokui, New Frame (Xinjia), with the small frame tradition and believe Chen Fake revealed the secret teaching of small frame tradition as well. The use of "frames" was an attempt by scholars in the late 1930s to classify the growing number of taijiquan styles by size of stance and other criteria. and this became a common practice by the 1950s. They classified, two well-known traditions, Chen Fake's taijiquan as Large Frame and Wu Yuxiang's as Small Frame. So, the Chen Small Frame (Xiaojia) tradition got its name partly by de facto being different from publicly known Chen forms. And partly because Chen Qingping was one of Wu Yuxiang's teachers, so his lineage too must be small frame. To relieve confusion for the new students, the Chen Family divided their Taijiquan into Large Frame (大架, Dà jià ) and Small Frame (小架, Xiǎo jià), and other historical changes were all but forgotten. In the Xiaojia, there are 78 moves in the First Form and 50 moves in the Second Form. And, some lineages teach additional forms that may date back to Chen Wangting's original system. Xiaojia is known mainly for encouraging students to seek to internalize spiral movements while practicing the form. Most spiral “silk reeling" (纏絲; chán sī) action is within the body. The limbs are the last place the motion occurs. Stances seem smaller because the feet do not turn outward in order to maintain a rounded crotch, the front hip is allowed to fold, and the pelvis is not forced forward. The palms must stay below the eyebrows and may not cross the center line of the torso. The body is constrained from shifting left and right horizontally except when stepping. Fajin may be expressed, but it is more calm. Zhu Tian Cai commented that small frame tradition routines also used to be practiced by "retired" Chen villagers. The Xiaojia forms