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The new CZ-9 uses 16 YF-135 engines, apparently a single chamber 3.6 MN thrust stage combustion RP-1 engine. Previous plans was for an under development 4.8 MN thrust dual-chamber engine (apparently known as the "YF-130"). The stage is 10.6 m in diameter.
The 2nd (10.6 m dia.) & (optional) 3rd stages (7.5 m dia.) uses 4 & 1 120 t thrust LH2 engine, probably an evolved YF-77 used on the LM-5 core w/ open cycle. Payload given is 150 t to LEO & 53 t to LTO, in SH/SS or SLS Block 2 class.
Given new engines used & 3 in-development engine designs probably going to be halted ("YF-130", the 2.2 MN open cycle LH2 engine apparently named "YF-90" & 250 kN closed cycle LH2 "YF-79"), it's unlikely to appear before well into the 2030s.
Re-usability isn't mentioned, but discussions in Chinese forums seems to think there's plenty of capability to include it.
Whether this new plan can be called "aggressive" (source @SenBillNelson) is debatable, but I definitely think it's "steady" & much more doable.
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