In this artwork, how is the Paris of the Paintings elucidated?

Upon arriving in Paris in March 1886, the Musée du Louvre was the first placed van Gogh visited, directly after exiting the train. In late 1886 he writes of his interest in Impressionism, yet not quite "joined the club".  His intention, he says, is to use vivid color and not greys.  In 1886, he did twelve landscapes, "frankly green frankly blue" [such as Lane at the Jardin du Luxembourg] as he struggled "for life and progress in art".  It was in July 1886 that his brother Theo began to notice changes in Vincent's paintings and noted Parisian artists began swapping paintings with him.
Theo Jardin du Luxembourg Musée du Louvre Impressionism Louvre Paris