!! Warning: This hanjie is a linea, it is only logical with the constraint that the picture consists of a single curved line, thus each black cell has exactly two of its four nearby cell blacks (except the two ends) !!

"Le Poète est semblable au prince des nuées
Qui hante la tempête et se rit de l'archer ;
Exilé sur le sol au milieu des huées,
Ses ailes de géant l'empêchent de marcher."
Charles Baudelaire

"Poets are like these lords of sky and cloud,
Who ride the storm and mock the bow's taut strings,
Exiled on earth amid a jeering crowd,
Prisoned and palsied by their giant wings."
(https://lyricstranslate.com/fr/lalbatros-albatrosses.html)

Regarding the technics, here are the main things to know for now:
We can't have any 2x2 square nor any "T". Then, edge-logic can be used easier.
Moreover, when we have a turn, we can place cross in the angle. When we have a segment, we can place cross along the line (except in the extremities).
Any area which is isolated from the rest by cross is necessarily empty.
If both the ends are found, we must extend the curve "everywhere that is necessary".

Difficulty : *****

Tested, logical (as a linea).
Edge-logic can be usefull.
Good blackenage.