What are the excellent couplets calligraphy works?

2. Excellent couplet calligraphy works, as shown in the following figure:

3. Excellent couplet calligraphy works, as shown in the following figure:

4. Excellent couplet calligraphy works, as shown in the following figure:

5. Excellent couplet calligraphy works, as shown in the following figure:

6. Excellent couplet calligraphy works, as shown in the following figure: