Yu–Meng-like — ẋ=a(y−x)+0.2 yz, ẏ=28 x−xz−0.3 y, ż=xy−3z+0.15 y. Classic a=10. +0.2yz−0.3y fold. Distinct from yu-qi-like.html / meng-yu.html. RK4. Gold trail, cap 650. RM = settled silhouette, no animate-on.