"Inspector Yumio, you are too kind."

Samejima Ryuhei bowed slightly to the crowd and said, "I'm the disaster relief worker from yesterday. Because a murder case has occurred this time, I will be cooperating with you in the investigation."

"Please advise me."

Tang Ze returned the gift without further delay: "Then without further ado, let's get to the point.

Is this fire really caused by arson?"

"That's right." Samejima Ryuhei nodded.

"Where is the fire starting? Is it around here?" Gao Mu asked as he looked at the charred shelf beside him.

"Not here. Because the room temperature drops, the burned house will be covered with thick soot."

Samejima Ryuhei shook his head and said, "This isn't where the fire started. Follow me, I'll take you there."

Wearing a safety helmet, Ryuhei Samejima slightly adjusted the light on the hat to avoid shining into other people's eyes, and then walked towards the living room of the room.

But just as Sato Miwako entered the room, the shelf next to the door suddenly fell down.

"Be careful." Although Samejima Ryuhei was the first to enter the room, he stood at the door and did not move away.

Seeing the black debris falling, he quickly pulled Sato Miwako towards him.

“Ka-ka…”

The charred wooden pillar fell to the ground and broke into several pieces.

"Be careful, the house after the fire is more like a dangerous building. You never know when something will be destroyed." Samejima Ryuhei gave a warning after letting go of Sato Miwako, and then continued to walk forward.

"Are you okay, Detective Sato?" Seeing his beloved in danger, Takagi hurried forward to ask.

"It's okay, let's go." Sato Miwako patted Takagi to signal him not to worry, and followed everyone to a corner of the living room.

"When the temperature gets higher, there will be less soot, and this area is the starting point of the fire."

Samejima Ryuhei led everyone to the dining table. He first gestured for everyone to look at the ceiling, then squatted down and said, "It's likely caused by the fire from the cigarette."

Everyone looked towards the area pointed by the other party, but they were all dumbfounded.

Because the area the other party pointed to was completely burnt.

It was completely charred black.