Seeking a Hong Kong film title

At the beginning, the male lead appeared with a box with a guitar hidden in it. Then, there was a conflict. The male lead escaped and entered the hotel owned by the female lead.
When they first met, the female protagonist had already noticed the male protagonist, but the male protagonist did not realize it. She took a shower in the room, and the female protagonist peeked in the male protagonist's room. When the male protagonist came out wrapped in a towel, the female protagonist held a knife against the male protagonist's penis and asked him why he was here...
In the end, the female lead died to save the male lead.
[PS: I saw it many years ago. It felt hazy. I wanted to relive it recently, so I remembered the plot.] The female lead looked familiar. She looked like a famous Hong Kong movie star, but he couldn't remember her name.
The background was probably from the 70s to the 90s. The scene did not seem to be in China either. There was also a desert and a big cactus at the end of the movie.

Answer 1

A Hong Kong movie might be titled " Cold Against the Water." This was a martial arts movie released in 2013. It was directed by Guo Fan and starred Fan Bingbing, Wu Yifan, Zhang Yi, and others. The movie was about a character in Jianghu, and the plot was full of ups and downs. It was a well-received movie.