Figure 1. Notes and Sketches (David Wei, 28th November 2017)

Figure 2. Notes and Sketches (David Wei, 28th November 2017)

Figure 3. Notes and Sketches (David Wei, 28th November 2017)

Figure 4. Paper work (David Wei, 28th November 2017)

Figure 5. Notes and Sketches (David Wei, 28th November 2017)

Figure 6. Notes and Sketches (David Wei, 28th November 2017)