Check two different clocks

Thank you for your reply.

always @(posedge clk or negedge rst_n) begin
	if (!rst_n) begin // reset the registers
		count = 0;
	end else begin
		count_cal = 5'b00000; // reset
	end
end
always @(posedge clk_50 or negedge rst_n) begin
	if (!rst_n) begin // reset the registers
		flag_cal = 0;
		count_cal = 0;
	end else begin
		if (clk) begin
			count_cal = count_cal + 5'b00001;
			if ((count_cal > 1) && (count_cal < 7)) //
				flag_cal <= flag_cal + 1'b1;
			else
				flag_cal <= 1'b0;
		end
	end
end
		
always @(posedge flag_cal or negedge rst_n) begin
// this is to do 3 commands