SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

o

Rule 13d-1(c)

x

Rule 13d-1(d)

CUSIP No. 88557W 101

13G

Page   2   of   8   Pages

1

Name of Reporting Person
Perseus Technology Limited

2

Check the Appropriate Box if a Member of a Group

(a)  o

(b)  o

3

SEC Use Only

4

Citizenship or Place of Organization
British Virgin Islands

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5

Sole Voting Power
32,074,262

6

Shared Voting Power
0

7

Sole Dispositive Power
32,074,262

8

Shared Dispositive Power
0

9

Aggregate Amount Beneficially Owned by Each Reporting Person
32,074,262

10

Check if the Aggregate Amount in Row (9) Excludes Certain Shares   o

11

Percent of Class Represented by Amount in Row 9
11.2%

12

Type of Reporting Person
CO

CUSIP No. 88557W 101

13G

Page   3   of   8   Pages

1

Name of Reporting Person
Zhuhai Qixin Xieli Information Technology Co., Ltd.

2

Check the Appropriate Box if a Member of a Group

(a)  o

(b)  o

3

SEC Use Only

4

Citizenship or Place of Organization
People’s Republic of China

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5

Sole Voting Power
32,074,262(1)

6

Shared Voting Power
0

7

Sole Dispositive Power
32,074,262(1)

8

Shared Dispositive Power
0

9

Aggregate Amount Beneficially Owned by Each Reporting Person
32,074,262(1)

10

Check if the Aggregate Amount in Row (9) Excludes Certain Shares   o

11

Percent of Class Represented by Amount in Row 9
11.2%. See item 4.

12

Type of Reporting Person
CO

Item 1(a).

Name of Issuer:
360 Finance, Inc.  (the “Issuer”)

Item 1(b).

Address of Issuer’s Principal Executive Offices:
China Diamond Exchange Center, Building B, No. 555 Pudian Road, No. 1701 Century Avenue, Pudong New Area, Shanghai 200122, People’s Republic of China

Item 2(a).

Name of Person Filing:
(i) Perseus Technology Limited; and

(ii) Zhuhai Qixin Xieli Information Technology Co., Ltd. (collectively, the “Reporting Persons”)

Item 2(b).

Address of Principal Business Office or, if none, Residence:
For Perseus Technology Limited

Start Chambers, Wickham’s Cay II, P. O. Box 2221, Road Town, Tortola, British Virgin Islands.

For Zhuhai Qixin Xieli Information Technology Co., Ltd.

Room 103-21, Building A, Dong’ao Cultural Center Building, Wanshan Town, Zhuhai

Item 2(c)

Citizenship:
Perseus Technology Limited - British Virgin Islands

Zhuhai Qixin Xieli Information Technology Co., Ltd. - People’s Republic of China

Item 2(d).

Title of Class of Securities:
Class A ordinary shares, $0.00001 par value per share, of the Issuer

The Issuer’s ordinary shares consist of class A ordinary shares and class B ordinary shares. Each holder of class A ordinary shares is entitled to one vote per share and each holder of class B ordinary shares is entitled to twenty votes per share on all matters submitted to them for vote. Class B ordinary shares are convertible at any time by the holder thereof into class A ordinary shares on a one-for-one basis. Class A ordinary shares are not convertible into class B ordinary shares under any circumstances.

Item 2(e).

CUSIP Number:
88557W 101

This CUSIP number applies to the American depositary shares of the Issuer. Each American depositary share represent two class A ordinary shares of the Issuer. No CUSIP number has been assigned to the class A ordinary shares of the Issuer.

Item 3.

If this statement is filed pursuant to §§ 240.13d-1(b), or 240.13d-2(b) or (c), check whether the persons filing is a:

Not applicable

Item 4.

Ownership:

Reporting Person

Amount
beneficially
owned:

Percent
of class:

Percent of
aggregate
voting
power:

Sole power to
vote or direct
the vote:

Shared power
to vote or to
direct the vote:

Sole power to
dispose or to
direct the
disposition of:

Shared power
to dispose or to
direct the
disposition of:

Perseus Technology Limited

32,074,262

11.2

%

3.1

%

32,074,262

0

32,074,262

0

Zhuhai Qixin Xieli Information Technology Co., Ltd.

32,074,262

11.2

%

3.1

%

32,074,262

0

32,074,262

0

As of December 31, 2018, 32,074,262 class A ordinary shares were directly held by Perseus Technology Limited, a company incorporated in the British Virgin Islands. Perseus Technology Limited is wholly owned by Zhuhai Qixin Xieli Information Technology Co., Ltd.

The percentage of class of securities beneficially owned by each Reporting Person is based on a total of 287,652,707 ordinary shares (being the sum of 247,832,121 class A ordinary shares and 39,820,586 class B ordinary shares) of the Issuer outstanding as of December 31, 2018.  Each holder of class A ordinary shares is entitled to one vote per share and each holder of class B ordinary shares is entitled to twenty votes per share on all matters submitted to them for vote. Class B ordinary shares are convertible at any time by the holder thereof into class A ordinary shares on a one-for-one basis. Class A ordinary shares are not convertible into class B ordinary shares under any circumstances.

Item 5.

Ownership of Five Percent or Less of a Class:

Not applicable

Item 6.

Ownership of More than Five Percent on Behalf of Another Person:

Not applicable

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Controlling Person:

Not applicable

Item 8.

Identification and Classification of Members of the Group:

Not applicable

Item 9.

Notice of Dissolution of Group:

Not applicable

Item 10.

Certifications:

Not applicable

Exhibit No.

Description

A

Joint Filing Agreement

Perseus Technology Limited

By:

/s/ Yue Dazhou

Name:

Yue Dazhou

Title:

Director

Zhuhai Qixin Xieli Information Technology Co., Ltd.

By:

/s/ Yue Dazhou

Name:

Yue Dazhou

Title:

Executive Director

Perseus Technology Limited

By:

/s/ Yue Dazhou

Name:

Yue Dazhou

Title:

Director

Zhuhai Qixin Xieli Information Technology Co., Ltd.

By:

/s/ Yue Dazhou

Name:

Yue Dazhou

Title:

Executive Director