Visual-perception motor-coordination integration program (CCVPMCI) is a Chinese characteristic-based VMI-focused program involving the most Chinese-handwriting-related skills training. CCVPMCI mainly emphasizes the training role of visual-motor integration. The idea of CCVPMCI program will involve (1) visual motor integration training affiliated with visual perception and motor coordination as warm-up exercise, (2) more focus on visual spatial perception in connect with unique visual structure of Chinese characters, (3) the trace or component elements of Chinese characters as the interesting practice material and (4) appropriate challenge for learning.

Visual-perception motor-coordination integration program (CCVPMCI) is a Chinese characteristic-based VMI-focused program involving the most Chinese-handwriting-related skills training. CCVPMCI mainly emphasizes the training role of visual-motor integration. The idea of CCVPMCI program will involve (1) visual motor integration training affiliated with visual perception and motor coordination as warm-up exercise, (2) more focus on visual spatial perception in connect with unique visual structure of Chinese characters, (3) the trace or component elements of Chinese characters as the interesting practice material and (4) appropriate challenge for learning.

Chinese Legibility Scale is the self-develop assessment tool to investigate a child's handwriting legibility objectively. Children will be asked to copied 10 Chinese characters on paper within 2*2cm squares to complete the copying paper. Meanwhile, the performance time will be recorded when the child start writing the firs stoke until finish the last stroke of the last character. These Chinese characters are selected from three versions of current mandarin textbooks according to each grade and those with high-frequency and around the average stroke counts will be chosen. Then, characters can be classified into five types of structures based on the visual similarity of character, including top-down (vertical), left-right (horizontal), P-shaped, L-shaped and enclosed. Ultimately, there are 20 characters in total for each grade with five types evenly. The scale will be scored by a therapist blind to the experiment to decide children's writing legibility.

The CHEF is an observational assessment designed to objectively measure the handwriting performance of school-aged children. It is composed of 25 items and divided into five main dimensions, including construction, accuracy, direction of the characters, writing speed and pencil grip. Items are descriptions of common writing problems by scored on 5-point Likert scale according to the frequency of the problem.

The DTVP-3 is commonly used as a standardized and norm-referenced test to assess visual perception skills for children aged 4 through 12 . The testing time will range from approximately 20 to 40 minutes depending on the child's ability. It is composed of 5 subscales: eye-hand coordination (EH), copying (CO), figure-ground (FG), visual closure (VC) and form constancy (FC). The result of the five subtests can be combined to form three composites: motor-enhanced visual perception, motor-reduced visual perception, and general visual perception. The first two subtests involve motor-enhanced visual perception skills and are summed together to represent visual-motor integration abilities. The latter three subtests (FG, VC and FC) are non-motor involved and are summed together to represent motor-reduced visual perception. The combination of motor-enhanced and motor-reduced visual perception could be the general visual perception skills.