EHMT2 and hepatocellular carcinoma: Nanodiamonds (NDs) physically adsorbed with UNC0646, a selective inhibitor of EHMT2, were called complexes (ND‐UNC0646), with good dispersibility and release in response to the acidic tumor environment, thereby showing enhanced HCC treatment efficiency by inhibiting H3K9 methylation.[97] The SAHA‐Zn2+‐5‐Aza conjugates could self‐assemble into nanofibers with superior antitumor efficiency.