$NVIDIA(NVDA.US)170 is still quite strong, having tested this level three times recently without breaking. Many value investors are waiting to build positions at this level. However, I personally think Dazi is still in a weak rebound phase and is unlikely to rally directly, so it's best to take some profits during the rebound to reduce position pressure. If it really rallies, it's fine to miss out on some gains. The real pain would be if it breaks the key 170 level, as it would likely head towards 160, leaving no bullets to average down.

Personal opinion, not investment advice