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Our 2003 "Cicerone" had discussed charm dynamics with different directionsand levels \cite{CICERONE}. Here we focus on two items, where the `landscape'has changed sizably. (A) The lifetimes \& semi-leptonic decays of charm hadronsshow the impact of non-perturbative QCD and to which degree one can apply HeavyQuark Expansion (HQE) for charm hadrons. It is more complex as we have learntfrom 2019/20 data. (B) {\bf CP} asymmetry has been established in 2019\cite{LHCbGuy}: $\Delta A_{\bf CP} \equiv A_{\bf CP}(D^0 \to K^+K^-) - A_{\bfCP}(D^0 \to \pi^+\pi^-) $=$\, -\, (1.54 \pm 0.29 ) \cdot 10^{-3}$ is quite anachievement by the LHCb collaboration! Our community is at the beginning of along travel for fundamental dynamics. Can the SM account for these? We discussthe assumptions that were made up to 2018 data and new conclusions from 2019/20ones. We need more data; however, one has to discuss correlations betweendifferent transitions. We give an {\bf Appendix} what we have learnt for large{\bf CP} asymmetry in $K_L \to \pi^+\pi^-e^+e^-$.

2019/20 Lessons from $\tau (\Omega_c^0)$ \& $\tau (\Xi_c^0)$ and {\bf CP} asymmetry in charm decays